| Brand | Ulla |
|---|---|
| Material | Plastic |
| Color | Cactus |
| Capacity | 1 Ounces |
| Special Feature | Bpa Free,Hydrate,Hydration Reminder |
| Age Range (Description) | Adult |
| Product Dimensions | 0.98"W x 1.57"H |
| Product Care Instructions | Hand Wash Only |
| Model Name | Ulla Cactus |
| Number of Items | 1 |
| Reusability | Reusable |
| Unit Count | 1 Count |
| Manufacturer | ULLA |
| Part Number | ULLACACTUS |
| Item Weight | 0.001 ounces |
| Item model number | ULLACACTUS |
| Batteries | 1 Lithium Metal batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Size | 1 Count (Pack of 1) |
| Item Package Quantity | 1 |
| Special Features | Bpa Free,Hydrate,Hydration Reminder |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Metal |
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Ulla Smart Light for Water Bottle, Small Hydrate Reminder, Fits Most Water Bottles, Lights Up when Time to Drink, Hydration Intake Planner, Home & Office Use, BPA Free - 'Cactus'
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Purchase options and add-ons
| Brand | Ulla |
| Material | Plastic |
| Color | Cactus |
| Capacity | 1 Ounces |
| Special Feature | Bpa Free,Hydrate,Hydration Reminder |
About this item
- SMART LIGHT: Ulla is the world's first hydration reminder water bottle attachment! It can be seamlessly moved from bottle to bottle and uses smart detection sensors to remind you to drink water at least once per hour.
- EASY TO USE: Ulla makes drinking water easy. It fits most water bottles and does not require any replacement parts or app set up unlike other smart water bottles. It's perfect to use for your home or office water bottle and lights up quietly without disturbing you or others around.
- HYDRATE HYDRATE HYDRATE: Did you know 75% of people are dehydrated? Don't fall into this norm with the help of Ulla, your new personal hydration coach. This smart light can help you drink 3x more water which can result in more energy, less headaches, better skin & metabolism, and an overall healthier lifestyle.
- CUTE DESIGN: This light features a cute cactus with the words “DON’T BE A CACTUS” written across it and comes in a clean white color that will compliment any silicone water bottle, plastic water bottle or glass water bottle.
- UNSURPASSED TECHNOLOGY: Ulla's blinking technology was developed by the US Navy and effectively grabs the user's attention. The light up attachment includes an auto on/off, daylight sensor, proximity sensor, and has a 6 month battery life. Pre-installed CR2032 coin cell battery is already included, but can be replaced after life span.
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Product Description
Ulla is your personal hydration coach! Too many people don't drink enough water. If you're one of those busy bees, Ulla will help you remember to drink water throughout your day. No need to buy a new water bottle - just attach Ulla to turn your existing one into a smart water bottle and get the optimal hydration your body needs.
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Give your bottle super powersAttach Ulla to any glass water bottle, plastic water bottle, tumbler, or cup of you own. |
Drink more water than ever beforeUlla will remind you when it's prime hydration time! When it's been 30 - 40 minutes since your last sip of water, Ulla will start blinking for up to one minute as a reminder to drink more water. |
Feel good and stay hydratedUlla's human-centered design helps you develop the habit of regular hydration. |
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| Don't be a cactus! | beYOUtiful | Black | Koalafied to drink | you got this! | |
| Auto ON/OFF | ✓ | ✓ | ✓ | ✓ | ✓ |
| Daylight sensor | ✓ | ✓ | ✓ | ✓ | ✓ |
| Proximity sensor | ✓ | ✓ | ✓ | ✓ | ✓ |
| Battery Life | 6 months | 6 months | 6 months | 6 months | 6 months |
Compare with similar items
This item Ulla Smart Light for Water Bottle, Small Hydrate Reminder, Fits Most Water Bottles, Lights Up when Time to Drink, Hydration Intake Planner, Home & Office Use, BPA Free - 'Cactus' | HidrateSpark TAP Smart Water Bottle – Tritan Plastic – Tap Phone to Track Water Intake, LED Glow Reminder When You Need to Drink – Chug Lid | HANDYSPRING - Smart Water Bottle with Reminder to Drink Water - Lights and Sound (On-Off) Hydrate Glow Bottle 26 oz, Track Your Sips with Straw, Smart Hydration Reminder, Travel Water Bottle HS03GN | Hidrate Spark TAP Smart Water Bottle – Insulated Stainless Steel – Tap Phone to Track Water Intake, LED Glow Reminder When You Need to Drink – Straw Lid, 20 oz, Scuba | Hidrate Spark TAP Smart Water Bottle – Tritan Plastic – Tap Phone to Track Water Intake, LED Glow Reminder When You Need to Drink – Straw Lid, 24 oz, Scuba | Hidrate Spark PRO Smart Water Bottle – Insulated Stainless Steel – Tracks Water Intake with Bluetooth, LED Glow Reminder When You Need to Drink – Straw Lid, 21 oz | |
|---|---|---|---|---|---|---|
| Customer Rating | 4.4 out of 5 stars (834) | 4.0 out of 5 stars (665) | 3.6 out of 5 stars (29) | 4.1 out of 5 stars (347) | 4.1 out of 5 stars (118) | 4.4 out of 5 stars (2904) |
| Price | $25.00$25.00 | $19.99$19.99 | $29.99$29.99 | $29.99$29.99 | $19.99$19.99 | $79.99$79.99 |
| Shipping | FREE Shipping. Details | FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime | FREE Shipping. Details | FREE Shipping. Details | FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime | FREE Shipping. Details |
| Sold By | ULLALABS | Hidrate, Inc. | DaveEcomm | Hidrate, Inc. | Hidrate, Inc. | Hidrate, Inc. |
| Color | Cactus | Fruit Punch | GREEN | Scuba | Scuba | Deep Blue |
| Item Dimensions | 0.98 x 0.39 x 1.57 inches | 2.95 x 3.94 x 11 inches | 3 x 3 x 11.5 inches | 2.95 x 3.94 x 11 inches | 2.95 x 3.94 x 11 inches | 2.8 x 0 x 10.91 inches |
| Material | Plastic | Tritan Plastic | Plastic | Stainless Steel | Tritan Plastic | Stainless Steel |
| Size | 1 Count (Pack of 1) | 24 Oz | — | 20 oz | 24 Oz | 21 oz |
Product information
Technical Details
Additional Information
| ASIN | B07G2C1T69 |
|---|---|
| Customer Reviews |
4.4 out of 5 stars |
| Best Sellers Rank | #18,161 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #557 in Water Bottles |
| Date First Available | July 31, 2018 |
Warranty & Support
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Videos
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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 AmazonReviewed in the United States on September 8, 2021
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It fits on water bottles of various sizes. The reusable bottle I have pictured (I have 3 of them) has a diameter of almost 3 1/2” (nearly 9cm) but the band also fits on a standard 16.9 oz. bottle and bottles larger than the one I typically use.
The light blinks every 30-45 minutes to remind you to drink. After you drink it will light up slowly and turn off slowly so that means it has recorded you drinking and reset the clock. It does not blink all night while you sleep; the instructions explain it will go through about 2 blinking cycles and as long as it doesn’t sense movement, it will stop blinking until it senses movement again.
The only caveat is that you need to have the bottle in front of you in order to see it - it doesn’t make any noise (like yell at you, which I would also likely respond to). So make sure you take the bottle from your work station to other rooms where you spend time outside of work. I work from home so I grab my bottle and move it at the end of the day.
This item is currently unavailable, but the last time that happened they had some available a few weeks later; I hope there are more available soon!!
*This product may not be ideal for those with light sensitivity or conditions like epilepsy because the light flashes quickly. If flashes about 10 times, then stops, and repeats that series twice more.*
Happy drinking!!
Reviewed in the United States 🇺🇸 on September 8, 2021
It fits on water bottles of various sizes. The reusable bottle I have pictured (I have 3 of them) has a diameter of almost 3 1/2” (nearly 9cm) but the band also fits on a standard 16.9 oz. bottle and bottles larger than the one I typically use.
The light blinks every 30-45 minutes to remind you to drink. After you drink it will light up slowly and turn off slowly so that means it has recorded you drinking and reset the clock. It does not blink all night while you sleep; the instructions explain it will go through about 2 blinking cycles and as long as it doesn’t sense movement, it will stop blinking until it senses movement again.
The only caveat is that you need to have the bottle in front of you in order to see it - it doesn’t make any noise (like yell at you, which I would also likely respond to). So make sure you take the bottle from your work station to other rooms where you spend time outside of work. I work from home so I grab my bottle and move it at the end of the day.
This item is currently unavailable, but the last time that happened they had some available a few weeks later; I hope there are more available soon!!
*This product may not be ideal for those with light sensitivity or conditions like epilepsy because the light flashes quickly. If flashes about 10 times, then stops, and repeats that series twice more.*
Happy drinking!!
[[My additional tips for drinking more water from my research, if you’re interested, since I have been dehydrated to the point of being off sick from work 4 times in the last year:
-Using a wide-mouth bottle may help you drink more during each session.
-Aim to drink somewhere around 80 ounces per day; some sources suggest at least 80 oz. or up to half of your body weight in ounces, so if you weigh 200 pounds, you should drink 100 ounces of water…that’s a lot.
-Water helps every function of your body, improves your skin texture, and can even impact your mood.
-Drink between meals on this schedule:
—8-16 oz. shortly after you wake up (helps rehydrate after your sleeping “fast” and activate digestion).
—Drink 8 oz. before you get a shower (if you shower shortly after waking up, don’t drink extra water; this helps keep blood pressure stable).
—Drink BETWEEN, not with meals, so a half hour before and 30-45 minutes after you eat (a few sips is fine but otherwise you’re filling up with unnecessary liquid and watering down your food; this is an “Eastern medicine” technique). I will pick up my water bottle and pretend to drink so that the clock resets and I can drink again after I eat to aid digestion.
—Drink water at the temperature you prefer; I like room temperature water because I have sensitive teeth. If you like ice water, use an insulated cup.
—Drink 8 oz. of water 30 minutes prior to starting physical activities and then occasionally during activity, if you’re able. You don’t need really need an electrolyte drink/anything more than water unless you’re working out very hard for an hour or more.
—Drink 8 oz. right before you go to sleep; it shouldn’t be enough to wake you up to urinate overnight.
—Coffee does count towards your daily water goal, however, it is a diuretic, so make sure this is not your MAIN water source. Coconut water is very good, however, juice, soda, alcohol, etc. don’t count. Drink some electrolyte water before you go to bed after drinking alcohol and also the next morning when you wake up.
—I swear by electrolyte additives for water. Some have added B vitamins for energy (like “Liquid IV”) and others do not (like “Nuun” tablets, which I love). They really help no matter how much water you drink per day and provide a little natural flavor to plain water; I typically don’t use more than 1-2 per day.
-If you’re starting a new diet, make sure to drink a lot of electrolyte-enhanced water when you start. This is due to losing water weight first and that’s where your body holds salt and electrolytes. This is part of the “Keto flu” that occurs when you start that diet.]]
MY BACKSTORY:
I carry a water bottle everywhere and would sit with one on my desk at work daily, but I rarely would drink out of it. I simply carried it because I would suddenly feel thirsty if I didn't have it. I get a headache around 2-3pm daily like clockwork. I suspected it was dehydration since the rare occasion that I did manage to drink enough, I didn't get a headache, but I couldn't keep up with it. I tried various tracking systems, including the ones with the time printed on it to pace myself. None of it worked because I physically needed a reminder. I thought about setting a timer, but that would be cumbersome, disruptive, and not dynamic enough to shift with daily life. I found this reminder and was hesitant to pay $25. But, it was a lot cheaper than "smart" water bottles and I knew taking Motrin and/or Tylenol daily was not healthy. The cost was worth it after feeling this headache-free relief!!
SIZE:
It has a silicone band that fits well on my water bottle, which is about 3 inches in diameter. It definitely has enough stretch to fit on a 1L Nalgene, for example. The device itself is about 1.5" tall, 1" wide, and 3/8" thick.
HOW IT WORKS:
I timed it when I first got it to see how the cycling works. Every ~35 minutes it strobes for ~5 seconds, then is off for ~5 seconds, alternating that cycle for about a minute before it resets the 35 second clock. I usually grab it within those first 5 seconds, but if you're not around and it does 2 full cycles of 35 min/1 min flashing, it turns off until you drink again. It also resets the clock every time you drink and has a light that blinks whenever it registers you taking a drink. It's gotten to the point that my body has internalized the clock a bit; on many occasions it started strobing as I was reaching for a drink on my own!
MY CONCERNS DIDN'T END UP BEING ISSUES:
- I thought the "just drank" light would get set off a lot carrying my water bottle around, but that hasn't been an issue.
- It also has a light sensor, because it doesn't go off in the dark. I can keep it on my nightstand with no issues
- My water bottle has a straw, so every once in a while my sip is a little too still for it to register, but that's been only maybe 5 times in the last month.
- It's also perfect everyday use outside of the office - I don't have to deal with alarms and it dynamically updates as I drink.
- I keep it on all the time, and haven't worried about it falling off. I did take it off twice when I want on a day-long outing where I knew I'm going to be drinking a lot on my own and didn't want it to interfere with the frequent in and out of my backpack.
Reviewed in the United States 🇺🇸 on May 30, 2022
MY BACKSTORY:
I carry a water bottle everywhere and would sit with one on my desk at work daily, but I rarely would drink out of it. I simply carried it because I would suddenly feel thirsty if I didn't have it. I get a headache around 2-3pm daily like clockwork. I suspected it was dehydration since the rare occasion that I did manage to drink enough, I didn't get a headache, but I couldn't keep up with it. I tried various tracking systems, including the ones with the time printed on it to pace myself. None of it worked because I physically needed a reminder. I thought about setting a timer, but that would be cumbersome, disruptive, and not dynamic enough to shift with daily life. I found this reminder and was hesitant to pay $25. But, it was a lot cheaper than "smart" water bottles and I knew taking Motrin and/or Tylenol daily was not healthy. The cost was worth it after feeling this headache-free relief!!
SIZE:
It has a silicone band that fits well on my water bottle, which is about 3 inches in diameter. It definitely has enough stretch to fit on a 1L Nalgene, for example. The device itself is about 1.5" tall, 1" wide, and 3/8" thick.
HOW IT WORKS:
I timed it when I first got it to see how the cycling works. Every ~35 minutes it strobes for ~5 seconds, then is off for ~5 seconds, alternating that cycle for about a minute before it resets the 35 second clock. I usually grab it within those first 5 seconds, but if you're not around and it does 2 full cycles of 35 min/1 min flashing, it turns off until you drink again. It also resets the clock every time you drink and has a light that blinks whenever it registers you taking a drink. It's gotten to the point that my body has internalized the clock a bit; on many occasions it started strobing as I was reaching for a drink on my own!
MY CONCERNS DIDN'T END UP BEING ISSUES:
- I thought the "just drank" light would get set off a lot carrying my water bottle around, but that hasn't been an issue.
- It also has a light sensor, because it doesn't go off in the dark. I can keep it on my nightstand with no issues
- My water bottle has a straw, so every once in a while my sip is a little too still for it to register, but that's been only maybe 5 times in the last month.
- It's also perfect everyday use outside of the office - I don't have to deal with alarms and it dynamically updates as I drink.
- I keep it on all the time, and haven't worried about it falling off. I did take it off twice when I want on a day-long outing where I knew I'm going to be drinking a lot on my own and didn't want it to interfere with the frequent in and out of my backpack.
Reviewed in the United States 🇺🇸 on June 4, 2023
Reviewed in the United States 🇺🇸 on May 8, 2023
Top reviews from other countries
The batteries on these last forever which is surprisingly with all the flashing they do.
They flash approximately every 20-30 minutes to remind you to drink. You then take a drink and you get a one flash well done. They are motion sensitive, so if no one is around they won’t flash, they kind of go to sleep, which helps save the battery. I am so happy I tried these as they do encourage me to drink more. I highly recommend these!
I was getting headaches I knew largely from not drinking brought water.
Saw this and thought maybe a gimmick but let’s try. It 100% works. I will be at my desk and it flashes. When I finish the bottle I go straight off and fill it.
So if you’re struggling to remember to drink this little thing will help you.

































