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Fitbit One Wireless Activity Plus Sleep Tracker, Black
| Brand | Fitbit |
| Model Name | Fitbit One |
| Style | Modern |
| Color | Black |
| Screen Size | 4 Inches |
| Special Feature | sleep_monitor, pedometer, fitness_tracker |
| Shape | Rectangular |
| Target Audience | Unisex Adult |
| Age Range (Description) | Adult |
| Compatible Devices | Smartphone |
About this item
- One syncs automatically and wirelessly to tablets, computers and 150 plus leading iOS, Android and Windows smartphones using Bluetooth 4.0 wireless technology. Syncing to computers requires Internet connection and USB port. Syncing to mobile devices requires Bluetooth and Internet connection. Syncing range: 20 feet. Call notifications via Bluetooth 4.0
- Water Resistance: Charge has been tested up to 1 ATM meaning it is sweat, rain and splash proof. However, the device is not swim proof. We also recommend taking Charge off before showering because, as with any wearable device, it’s best for your skin if the band stays dry and clean.
- Warning: Do not use if you have a pacemaker or other internal, or implanted medical device. Not intended for use by children under 13. Always consult your physician. Slippery when wet
- We recommend charging your device every few days to ensure you are always tracking. Charge time: One to two hours. Battery life: up to 7 - 10 days. Battery type: Lithium-polymer
- Syncs with Windows Vista and later, Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later, and leading Android and Windows devices
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WARNING:
From the manufacturer
Product Description
Product Description
Fitness means being active, sleeping well, and eating smarter – and the Fitbit One helps you do all three. During the day, it tracks your steps, distance, calories burned, and stairs climbed. Come nightfall, it measures your sleep cycle to help you see how to sleep better; and it can even wake you in the morning without waking your partner. Your stats upload wirelessly via computer or select mobile devices (like the iPhone 4S). Powered by your stats, you can set goals, and track progress. Stay motivated by earning badges or connecting with friends for support or friendly competitions. Log food, work-outs and more. Bring greater fitness into your life – seamlessly, socially, 24 hours a day.
From the Manufacturer
Keep it Clean: Regularly clean your band and wrist—especially after working out or sweating. Rinse the band with water or wipe it with a small amount of rubbing alcohol. Do NOT use hand soap, body soap, dish soap, hand sanitizers, cleaning wipes or household cleaners which could get trapped beneath the band and irritate skin. Always dry the band well before putting it back on. Keep it Dry: While Fitbit devices are water resistant*, it’s not good for your skin to wear a wet band for long periods of time. If your elastomer band gets wet—like after sweating or showering—rinse and dry it thoroughly before putting it back on your wrist. Be sure your skin is dry before you put your band back on. Don’t Wear It Too Tight: Make sure your band isn’t too tight. Wear the band loosely enough that it can move back and forth on your wrist. If you use Fitbit products with Purepulse Heart Rate tracking, for better heart rate readings during exercise, we suggest wearing the band so it’s secure, but not too tight, and wearing the band higher on your wrist (about 2-3 finger widths above your wrist bone). Lower the band on your wrist and loosen it after exercise. Give Your Wrist a Rest: Prolonged rubbing and pressure may irritate the skin, so give your wrist a break by removing the band for an hour after extended wear.
Buying Guide
Move it up: Since blood increases further up your arm, wear your tracker higher on your wrist to improve the heart rate signal during workouts. Start by moving the device up to three finger widths above your wrist bone, then experiment with slightly lower placement. Keep it secure: The less your tracker moves during exercise, the more chance you have of maintaining a heart rate signal throughout the activity. Do not wear the band too tightly, as this can restrict blood flow and goes against our wear and care guidelines. Hold steady for ten seconds: High intensity exercises or activities that cause you to keep your wrist bent (like push-ups) or move your arms vigorously (like dance) may interfere with heart rate signals. If you stop seeing a signal during these types of activities, hold your wrist steady for ten seconds during breaks to get your reading.
Product details
- Is Discontinued By Manufacturer : No
- Product Dimensions : 0.25 x 0.75 x 2.25 inches; 0.32 Ounces
- Item model number : FB103BK
- Department : womens
- Batteries : 1 AAA batteries required. (included)
- Date First Available : September 17, 2012
- Manufacturer : Fitbit
- ASIN : B0095PZHPE
- Best Sellers Rank: #114,093 in Electronics (See Top 100 in Electronics)
- #1,192 in Smart Clips, Arm & Wristbands
- Customer Reviews:
Product guides and documents
Important information
Indications
• Make sure your band isn’t too tight. Wear the band loosely enough that it can move back and forth on your wrist. • If you use Fitbit Charge HR , Fitbit Blaze or Fitbit Surge , for better heart rate readings during exercise, we suggest wearing the band so it’s secure, but not too tight, and wearing the band higher on your wrist (about 2-3 finger widths above your wrist bone). Lower the band on your wrist and loosen it after exercise.
Directions
• While Fitbit devices are water resistant*, it’s not good for your skin to wear a wet band for long periods of time. • If your elastomer band gets wet—like after sweating or showering—rinse and dry it thoroughly before putting it back on your wrist. • Be sure your skin is dry before you put your band back on. If Fitbit Blaze gets wet or if you sweat in it, remove and completely dry the band before putting it back on. Give your wrist a rest by taking the band off every now and then, and regularly clean your band and wrist. • Even though Fitbit Flex 2 is swim-proof, it’s important to thoroughly dry your classic elastomer band and tracker, and remove any debris from your device after wear in the water, to avoid skin irritation. Please note that non-elastomer accessories should not be worn in water.
Legal Disclaimer
Brand New. Sealed Original Packing. All items carry Manufacture Warranty. Original Packing. Customer Satisfaction Guaranteed.
Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
Wattage
180 watts
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the size, performance, and motivation of the wearable computer. They mention that it's tiny, comfortable, and easy to use. They also appreciate the sleep tracking feature, which helps them increase their activity level. Customers are also satisfied with the tracking, ease of installation, and accuracy. However, some customers have different opinions on quality.
AI-generated from the text of customer reviews
Customers like the performance of the wearable computer. For example, they say it's a very useful device, works well, and is extremely sturdy. Customers also say it is a great pedometer in form and function, and a fantastic device to help achieve your fitness and weight loss goals. They say it would be a good device for PE at school and health classes, and that the alarm still functions.
"...get in as many steps as he does right now, but it still allows us to be competitive and also challenge ourselves...." Read more
"...FitBit both motivates and records, making it an ideal companion for fitness and weight loss programs...." Read more
"...It works very well as a “relative activity” tracker for all movement-based activities that I’ve encountered...." Read more
"...It's simple, works reliably, and you can sync to multiple devices if you want.Wearing..." Read more
Customers like the tracking of the Fitbit One. They mention that it is a good activity tracker, it monitors their steps taken, distance, stairs, and very active minutes. They love that it does more than just tracking steps/miles, and that it syncs easily with Bluetooth 4 enabled devices. Customers also appreciate the option to track their food, calories, and other exercise. They say that the tracking tools with the fitbit are easy to use and are a great resource to use for tracking calories.
"...There are also options to track your food, calories and other exercise...." Read more
"...Yet, it hasn't tracked any movement while I've been in cars, I watched it carefully the first few times to make sure...." Read more
"...on a fitness or weight loss plan, the FitBit is an excellent tool to keep track of activity and to motivate you to accomplish more...." Read more
"...The food menu on the dashboard has a lot of pre-measured nutritional information...." Read more
Customers are satisfied with the motivation provided by the wearable computer. They say it keeps them on track and helps them increase their activity level. They appreciate the congratulation trophies and the accurate online interface. Overall, customers are happy with the product and recommend it to others.
"...was a great decision to buy these for both of us as it's increased both of our fitness...." Read more
"...It motivates me to take extra trips or walk somewhere so I can reach my goal...." Read more
"...it does what it says it will do in a seamless manner and provides motivational feedback that keeps you engaged and constantly trying to improve...." Read more
"...the Up hasn't bothered me at all, and actually I see it and it reminds me to move!..." Read more
Customers like the ease of installation of the wearable computer. They say that the fitbit website is great and fairly intuitive. The interface is great, and it's easy to navigate and to log what they've eaten during the day. The product provides motivational information, including steps taken, in a seamless manner. The Fitbit One seems more convenient and adaptive, and is easy to set up and use. However, some customers have reported issues with the product's automatic sync.
"...are both different looking, but have similar functions and are pretty simple to use...." Read more
"...The apps and website are easy to use and very colorful and you can sync your fitbit to other apps." Read more
"...I'm giving this device 5 stars because I love how well -- and how automatically -- it works, but it's not perfect...." Read more
"...extra features, the Bluetooth connectivity with a smartphone, the easy to use, straightfoward app, and the simplicity of the whole thing, it's a..." Read more
Customers are impressed with how the One tracks their quality of sleep, including the time taken to fall asleep. The sleep tracker is an interesting function, along with the drinking water, calorie, and the sleep data is really nice. The product does a fairly good job of logging your sleep, but some customers are not really sure how accurate the sleep is.
"...I did think the sleep function was interesting, I wasn't getting it for that but now that I am seeing my sleep tracked it has helped me to notice..." Read more
"...The sleep tracker works great so long as you remember to turn off the timer when you wake, if you don't though you can go online and fix it...." Read more
"...showing me when I'm most active, although I found the sleep records to be the most revealing...." Read more
"...The Jawbone Up rates that much less, but also gives me info on "deep sleep vs light sleep and awake times" which I find more useful than just..." Read more
Customers generally like the accuracy of the wearable computer. They mention that it's pretty accurate on the steps taken, floors climbed, and does a good job tracking steps. Some say that it does not appear to register car, but it still gets an accurate count.
"...it close to his body so it's not swinging around and still gets an accurate count...." Read more
"...It is very accurate, even on a treadmill and I haven't had any problem with it tracking me while driving...." Read more
"...Is it accurate? Pretty much. It accurately reflects how many times I go up the stairs, for instance, and how far I've gone on the treadmill...." Read more
"...2) Doesn't keep track of measurements. Waist, arms, thighs, chest. I've lost size in these areas, but my weight shows the same...." Read more
Customers like the size of the wearable computer. They mention that it is tiny, comfortable, and easy to use. It is not inconvenient or particularly bulky, and it slips into their pants pocket. It's discreet, portable, and easily placed on their wrist at night in the Velcro wrist band supplied. Its rubber-type material, making it a perfect size for men and women.
"...The wristband for sleep is a good size and made well to change size for different people...." Read more
"...PROS:--- Small; easy to clip to a pocket or hide inside of clothing.--- Easy-to-use, simple app interface with reliable syncing.---..." Read more
"...It's so light and in rubber, it didn't even make a sound when it left me and met the ground. It was never found...." Read more
"...with a very fine Velcro-type material, making it a perfect size for men and women...." Read more
Customers are mixed about the quality of the wearable computer. Some mention that it's strong and durable, while others say that it broke within two months. The straps can break and the device itself was damaged beyond repair.
"...This alone is pretty clever; the One slips into a little pocket, and the band is linked together using a very fine toothed Velcro-like material...." Read more
"...What I don't like:The app is horrible. It's made for an iPhone and except for sleep, most of it won't rotate horizontally...." Read more
"...The fitbit comes with a charging dongle, a bluetooth adapter-- which must be used as it won't work with most or all other bluetooth adapters already..." Read more
"...OVERALL: The device is not bad, and has minimal flaws which turn out to be quite a hassle at times, such as switching from case to wrist-strap and..." Read more
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Not only did I buy one for myself, but after seeing it in use and how it could motivate a person my husband asked to get one as well so we purchased two from Amazon about a month apart. Both times this item shipped quickly with my Prime account.
I do read that some reviews say that all of the numbers are skewed and incorrect, but after reading lots of online reviews from different products of this type both on this site and on other websites NONE of these devices are 100% accurate for anyone...and anyone who says so is probably just not aware or lying to themselves or you because they are brand loyal. I've had no issues with it miscounting major steps or stairs. I did notice that it does sometimes count steep hills as stairs, but I think it works on altitude so that makes sense. And honestly, who cares...count it I worked hard to get up that steep hill count it! :0) I would be interested to find out how many stairs it counts as a flight, as I seem to rack up more flights at work than at home. I think my work staircase may be steeper or go higher than my home staircase because I always get more flights while at work than at home even if I only go up them once at work. Also it only counts going up, not down. Again that is understandable because your muscles work harder going up.
As for counting how many steps my feet take each day I clip mine every day to the inside of my bra in the gap between cleavage. I'm not sure that would work for all women, but it works perfect for me and I have never had it come unclipped and should it accidentally it would fall into my bran and I wouldn't lose it. The instructions say you can clip it to your waistband or put it in your pocket as well. I was afraid of it falling off and losing it, but I think the clip would be strong enough to keep it there with no problems. I'm just used to putting it where I do now. I liked the location so much that my husband decided he liked the location too, but being a man with no bra he got creative. We had an extra lanyard around that has a keyring that a badge clip was attached to. He took off the badge clip and now he just slides his fitbit clip onto the ring, puts it around his neck and slides it under his shirt. The shirt keeps it close to his body so it's not swinging around and still gets an accurate count. We've compared our numbers when waking around together and they are always very close, slightly off because we have different strides. He's also worn both, one clipped to his lanyard and one to his waistband and he got the same numbers on both after a walk. So we feel that him using it this way is okay.
I've also seen reports of people saying it's sensitive and picks up things like wiggling around, driving/riding in a car, etc. I've watched mine and I've not seen it add extra numbers for any of these types of activities unless I was actually moving my feet. It did count dancing if I was moving my feet and stepping around, but if I was just swaying in places or wiggling my hips/upper body it did not count any of that. I've even stood and shook the thing and if I shake hard enough I can get it to count numbers, but I had to do it pretty vigorously.
I bought it for the steps and stairs, so these are the features I use most. I did think the sleep function was interesting, I wasn't getting it for that but now that I am seeing my sleep tracked it has helped me to notice patterns where some days I might not have been sleeping enough. I like how it will still track your sleep as long as you are wearing it even if you forget to set it before you go to bed. If I forget I can just go to the app or website and tell it what time I went to bed and what time I woke up and up pops my sleeping data for that missing night.
The website was a little hard to use at first, it took some learning and just clicking on things to figure out how it worked so for people not proficient in computers they may have a hard time using it. I use the app on my iPod so I use the iPhone version, my hubby has a Samsung Tab 3 tablet so he is using the Android version. They are both different looking, but have similar functions and are pretty simple to use. There are a few things you can not do on the mobile apps that you have to log into the computer to do but it is not too much. Mostly a few setting options and setting goals are unavailable on the apps. I do like how the app will have a battery indicator you can check and the website will send you emails reminding you when it is time to charge.
These both came with dongles and I have both plugged into the computer. When I first set up the second I had to have one of the kids take mine to the other side of the apartment so that it would pick up the new one, but once that was one they are both syncing and functioning just fine on the same computer. As long as the computer is on, our information stays pretty current and if we did want to push a sync to see info we can do that as well. I can not sync mine with my iPod but it is because I have an iPod 4 and it's blue tooth connectivity is not as good as the newer devices so not the fault of this product but rather the fault of my device. My husbands however can sync just fine via blue tooth which is nice if we go on a trip and want to get updated info without carrying our dongles with us, they are small and I would be scared of loosing it!
The wristband for sleep is a good size and made well to change size for different people. We both have larger wrists and it's plenty big with a bit of room to spare. The way it is made with velcro it can easily be sized down to a smaller wrist as well so those concerned with wrist size I think would be just fine. It works on velcro and not buckles, snaps, strech, etc which is sometimes a hassle to get the sizing right on.
There are also options to track your food, calories and other exercise. I do occasionally log other exercise, but often I forget to log food, water and calories. If you are tracking calories the device itself will tell you how many calories you are burning, the website is where you would track weight, food, water intake, and exercise. You can also track some other numbers on the website if you are tracking blood sugar for diabetes, blood pressure, etc. So there are options on the website I don't use. Lastly this device syncs nicely with lots of other fitness websites so if you don't want to use the Fitbit site and trackers you can sync it to another website. It is a process however because somethings you can sync via the Fitbit site/app and others you have to go to the other websites/apps and sync through them. So it was a learning curve on that so again someone with little technology skills may have difficulty with this. Lastly you have a profile on the Fitbit website and you can make it public or private letting your friends see various things. I like having the options to make decisions on each thing. I don't mind strangers seeing how many steps I take each day, but I don't want anyone but friends seeing weight and no one cares what I ate if I was tracking food! These are all settings on the website to make certain things visible and others not. There is also an online community that you can use, but I found it clunky and more annoying than anything. Some of the other fitness websites are better so I rather just sync my info and use those.
Overall I think it was a great decision to buy these for both of us as it's increased both of our fitness. I know I can never get in as many steps as he does right now, but it still allows us to be competitive and also challenge ourselves. I know there are days that I forget it at home and multiple times I'll say things like ohhh man I'm not getting credit for these stairs today. (or walking a lot, etc.) It is also good at showing us how some days we feel very active, but are not as much as we think. And other days we feel like we didn't do much but were super active. We find ourselves parking further out just to try to get a few more steps in, or taking the stairs instead of an elevator just to get more stairs! I am really surprised by how it's changed my point of view on things!
I'm not a fitness guru, I don't have a regular workout or exercise routine, and I don't walk a bazillion steps a day. So don't think this is just for those people or the super obsessive. This is a great little device to give you that extra little motivation that might just be the difference between no activity and some activity!
It works wonderfully, I was a bit skeptical at first on whether or not it would track my steps accurately so I walked around while watching it and found that it was very accurate.
What's great is that it tracks all movement and how much effort is going into them. When I wear it while running and Zumba I can later look at the graphs and see an accurate layout of how hard I was working in intervals and cool down. I'd also like to note that I run on a treadmill so yes, it will track your movement if you're an indoor runner. Yet, it hasn't tracked any movement while I've been in cars, I watched it carefully the first few times to make sure.
The battery life is pretty good, I've owned it for over a month now and have only charged it three times. And for the first time it was because the battery was only half charged when I got the device in the mail. You can add email notifications when your fitbit is low so you stay on top of its battery.
The desktop syncing app is easy to use, (there's only three buttons!) and fitbit's site is interactive and straightforward with attractive designs for the graphs and data.
The sleep tracker works great so long as you remember to turn off the timer when you wake, if you don't though you can go online and fix it. The sleep tracker has been great motivation for me to go to bed sooner as I'm seeing how long it takes me to fall asleep. The vibration alarm is very effective, it always wakes me up no matter how deep in sleep I felt before. It's also hard to turn off when you wake because you have to fish the device out of your band (or in my case I clip it to my wrist brace) and hold the button so once you've turned it off you're pretty awake! If you don't want the alarm you don't have to set it.
I haven't used the food log because I use the app Loseit! that's free and has a pretty good selection. What's nice is you can sync your fitbit with your loseit account and it will recalculate your calorie deficit or surplus with the fitbit's data.
I've seen some people complain about losing their fitbit and so far I've only had a few occasions where adjusting my pants while wearing a backpack pulled the fitbit off of my pocket lining and I've only had one time where the fibit actually fell out of its case. That time I was sitting and the bottom lip of the case got caught. I think that the major thing is not pulling on the silicon as that will stretch it and make it easier for the fitbit to fall out. Since I don't have to charge it often my case isn't stretched yet. If you want to be very sure that you won't lose it, clip it to the interior of your pocket or into your bra. I wear mine clipped to the waist band of my underwear or leggings or clipped into my pocket, facing out.
It's not waterproof so be careful! It's also small so be sure not to misplace it! So far I haven't had any issue with that because it stays clipped to my clothes so well, even when I'm carrying them in a wad as I walk back from the community bathroom to my dorm room.
TL;DR:
Overall I love the device and it has done its job of helping me see how active I am. It is very accurate, even on a treadmill and I haven't had any problem with it tracking me while driving. It motivates me to take extra trips or walk somewhere so I can reach my goal. It also is helping me watch my calorie intake based on how many calories I am burning that day. The sleep track verified that I don't sleep well so I get to bed earlier. The silent alarm is very effective but doesn't startle you. The battery life is good, I haven't had any serious issue with losing it or having it fall out of its case. The apps and website are easy to use and very colorful and you can sync your fitbit to other apps.
Top reviews from other countries
Very disappointed with Amazon
- Escalones: Me decidí por el ONE dado que a diferencia de las otras pulseras este contaba escalones, para mi sorpresa no cuenta escalones sino Plantas subidas, al principio pense que esto no me gustaba, pero es mucho mejor así, pues por una parte los escalones pueden ser de diferentes tamaños y por otra dado que se basa en presión atmosférica y por tanto "altitud" también cuenta si estas subiendo una montaña o rampa, en resumen este punto también es positivo.
- Comodidad: El llevarlo enganchado en el cinturón es muy practico y discreto, quizá con una pulsera te olvidas más de ir cambiando de el de un pantalón a otro, pero dado que las pulseras no miden altitud sigo contento con la compra.
- Sueño: Se basa en los movimientos y es muy curioso ver esta información, con el pack que compras te viene la pulsera para atarlo cuando duermes que es muy cómoda.
- Experiencia: Si a registrar los pasos y plantas subidas le sumas anotar lo que comes con la web de fitbit... puedo asegurar que la motivación es máxima, al principio era reticente al tema de anotar lo que comía por tema de tiempo.. pero una vez lo haces te acostumbras y va muy bien, lo cierto es que no solo he bajado mucho peso si no que estoy mucho más activo ahora.
- Social: Fitbit te permite compartir retos con otros amigos que dispongan también de fitbit, por ejemplo tengo un par de amigos que cuentan pasos con Iphone y otro con fitbit, compartir los retos parece mentira pero es una motivación máxima.
- Precio: Creo que todos estos dispositivos tienen un precio un pelin elevado, no obstante la tecnología que llevan dentro es muy precisa, en algunos post de internet se les critica pero imagino que son versiones muy antiguas.. pues la preciosion la he notado muy aceptable.
- Algo negativo: Seguramente en unos años los smartphone cubrirán toda esta tecnología (pasos+escalones), pero si quieres motivarte ya HOY es un gadget muy interesante.
Acheté dans une démarche globale de perte de poids, ce petit Fitbit One - pas plus gros qu'une petite clé usb - me permet de quantifier les calories dépensées au quotidien, tout au long de la journée. On se prend vite au jeu de "faire ses pas" en empruntant des chemins nouveaux et qui rallongent un peu la distance, ou en prenant l'escalier au lieu de l'ascenseur.
Au-delà de ce côté ludique qui devient finalement vite une (bonne) habitude, il a une réelle utilité au quotidien en quantifiant les calories brûlées, ce qui permet d'ajuster ses repas en conséquent. Par exemple il s'intègre parfaitement avec myfitnesspal, qui est un peu son mirroir et permet de chiffrer assez finement son absorption de calories. De cette façon, on peut se mettre en léger déficit calorique quotidien pour perdre du poids, ou choisir de se mettre à l'équilibre pour le maintenir, sans pour autant tomber dans des excès intenables dans la durée, trop démotivants, et tout simplement mauvais pour la santé.
Je n'ai eu aucun problème non plus avec les "vraies" activités physiques réalisées en parallèle et mesurées par d'autres moyens. Par exemple les courses à pied enregistrées avec Runtastic (ou Endomondo etc...) ou les séances de natation enregistrées avec une montre Garmin Swim, viennent s'insérer tout naturellement en lieu et place des mesures du Fitbit One dans ces tranches d'utilisation, ce qui ne fausse pas les mesures, en double comptant les calories "sportives" par exemple.
Au niveau du format, je me suis longuement posé la question d'un bracelet (comme le Flex de ma femme) ou de celui-ci. Au final je suis très satisfait de ce choix. On ne fait pas plus discret, je le porte dans la poche du pantalon tout simplement. Juste une habitude à prendre au début pour ne pas l'oublier le matin. Ne portant jamais aucun "bijou" (ni gourmette, ni alliance, juste une montre "habillée" parfois) je n'aurais sans doute pas supporté très longtemps un bracelet "sport", que ca soit au niveau du confort ou de l'esthétique. De ce point de vue, chacun ses préférences. Il est aussi plus riche en fonctions qu'une Flex (altimètre pour mesurer les étages, écran...) et le fait de ne pas le porter au bras évite de compter des pas superflus en agitant les bras pendant une discussion animée par exemple. :)
J'ai eu quelques rares cas où il m'a compté des étages en trop, par exemple une fois pendant un trajet en voiture avec des tronçons très dynamiques sur route bosselée en rase campagne. Mais dans l'ensemble c'est plutôt fiable, et même s'il se plante de quelques étages un jour, c'est sans conséquence significative sur le décompte de calories.
Autonomie: un gros point fort, il tient 2-3 semaines (au moins deux fois plus longtemps qu'un Flex). En fait je l'ai rechargé une seule fois au bout de 10 jours par précaution bien qu'il affichait encore une demi-charge. 12j se sont écoulés depuis et il apparaît encore à mi-charge. Bon point car le but est bien de le porter 24/24 donc le moins il y a de maintenance, le mieux c'est.
Pour terminer, la fonction sommeil et le réveil vibrant: donne quelques indications sur la qualité de ses nuits (accessoirement permet de voir précisément à quelle(s) heure(s) bébé à pris son biberon ou ses tétées, les parents apprécieront...) et le réveil agit en douceur. J'aurais apprécié quelque-chose d'un peu plus sophistiqué comme une analyse en sommeil profond, paradoxal, etc... et pouvoir régler le réveil sur des phases de sommeil, dans une fenêtre temporelle définie, comme le font d'autres appareils. Mais c'est déjà bien pour une prise de conscience du (manque de) sommeil... :p
Au global, très satisfait de ce petit Fitbit One qui remplit parfaitement son rôle, et en toute discrétion.
Une aide réelle pour améliorer son hygiène de vie et se motiver à le faire dans la durée.
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