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Mio Alpha Heart Rate Monitor Sports Watch

by Mio
| 49 answered questions

List Price: $199.00
Price: $165.73 & FREE Shipping. Details
You Save: $33.27 (17%)
Only 2 left in stock.
Sold by Amazing Deals Online and Fulfilled by Amazon. Gift-wrap available.
  • Performance sports watch with continuous, precision heart rate monitoring
  • No chest strap required!
  • Suitable for running, cycling, and other intense workouts
  • Connects to Bluetooth Smart (4.0) devices
  • Battery life of 20+ hours of heart rate monitoring, and several months in watch mode
21 new from $158.63 9 used from $66.99

New Heart Rate Monitor from Mio
Explore the new features on Mio Alpha 2 Heart Rate Monitor. Learn more
$165.73 & FREE Shipping. Details Only 2 left in stock. Sold by Amazing Deals Online and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

Mio Alpha Heart Rate Monitor Sports Watch + Fitbit One Wireless Activity Plus Sleep Tracker, Black
Price for both: $261.12

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Color: Black/Black
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Product Description

Alpha is the world's first strapless, continuous heart rate monitor you can wear on your wrist. It has been tested accurate even while you are running at performance speeds of up to 12mph (20km/h). Before Alpha, the most common way to get an accurate heart rate continuously while exercising was to wear a strap around your chest. With Alpha's innovative technology, the world of heart rate monitoring will be changed forever. Alpha uses Bluetooth Smart technology to connect with compatible smartphones and sport and fitness devices. USB charging dock with magnetic alignment. Rechargeable lithium battery.

From the Manufacturer

Award-Winning Technology

Mio’s patented Continuous Technology is a true breakthrough - making uncomfortable chest straps a thing of the past! Mio’s patented design is extremely accurate, with a 0.99 correlation to EKG in laboratory testing.

An optical sensor monitors the volume of blood under the skin and sophisticated algorithms are applied to the pulse signal so that the heart’s true rhythm can be detected—even at performance speeds.

MIO Alpha Strapless Continuous Heart Rate Monitor Watch

Train with Heart. No Chest Strap Required!

Take your training to the next level by using heart rate to track and improve your performance. Used by top athletes, Mio ALPHA provides performance heart rate monitoring in comfort. ALPHA features include:

  • EKG-accurate heart rate monitoring even during rigorous exercise
  • Heart rate taken at wrist, eliminates need for a chest strap
  • Soft and durable silicone band to ensure a snug fit
  • User configurable heart rate zone with LED indicator and audible alerts
  • Post-workout activity review of total exercise time, average heart rate, and time “in zone”
  • Water resistant
  • Connects with Bluetooth to your favorite fitness apps
  • Timer/clock

No Chest Strap Required

Mio eliminates the need for constricting chest straps. Our technology reads heart rate on the wrist in a comfortable, easy to wear design.

Accurate at High Intensity

ALPHA provides EKG-accurate heart rate data, even during high intensity workouts such as running and cycling.

Continuous Heart Rate

Mio samples heart rate continuously from the wrist.

Bluetooth 4.0 Compatible

Transmit heart rate data from your ALPHA to your compatible Bluetooth Smart (4.0) smartphone.

Works With Your Favorite Fitness App

Mio ALPHA allows you to display, store, and track your heart rate with any app you choose, including popular third-party fitness apps such as Strava, Wahoo, MapMyRun, MapMyRide, Endomondo, Runtastic, and Digifit.

In the box:
  • Mio ALPHA performance heart rate monitor sports watch
  • USB charging dock with magnetic alignment
  • ALPHA Quick Start Guide
  • ALPHA Warranty Information
Compatibility Information

ALPHA is compatible with Bluetooth 4.0 smartphones including iPhone 4S and higher, iPad 3rd generation and higher, iPad mini, IPod Touch, and Android devices 4.3 and higher with Bluetooth 4.0.

Visit our website for up-to-date information on device compatibility.

Technical Specifications

- Connectivity: Bluetooth Smart (4.0)

- Sensors: Optical heart rate

- Battery: Rechargeable Lithium Plymer

- Battery Life: 20-24 hours in heart rate monitoring mode

- Water Resistance: 3ATM (30m)


- ALPHA Black/Black and Black/White fit wrists 5.7 inch-7.8 inch

- ALPHA Indigo fits wrists 5.2 inch-6.7

Why Train With Heart?

Heart rate training is the most effective way to track your fitness and improve your performance. That's why Mio develops innovative, easy-to-use products that make heart rate monitoring comfortable and accessible for all athletes.

Key Benefits:

- Understand your physiological response to exercise with real-time, continuous feedback

- Prevent injury caused by over training and improper pacing

- Improve workout efficiency & effectiveness by training in the appropriate heart rate zone

- Develop your body’s ability to use fat as fuel

- Accurately track your progress

Product Details

Manual [PDF]
  • Item Weight: 4 ounces
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • Average Customer Review: 3.8 out of 5 stars  See all reviews (460 customer reviews)
  • Amazon Best Sellers Rank: #4,311 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
  • Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

Customer Reviews

90% of the time it reads the heart rate correctly.
The strap is ingeniously designed that provide a snug and comfortable fit for all wrist sizes.
Clarence Chan
I definitely recommend this watch for anyone who needs an excellent heart rate monitor.
John Ray Palmer

Most Helpful Customer Reviews

Color Name: Black/Black
ok so as I like to begin any review here the short description:

Is this is the HOLY grail of heart rate monitoring !!..... not really ..

in short this is a heart rate monitor (continues monitoring) that doesnt need a chest strap.. with BLE (Bluetooth 4.0) technology to connect to you Iphone (Iphone 4s, 5 etc..) Android users Hold off buying .. and read further down...

it uses (As they say) Multi-million dollar medical invention created by Philips (not sure about the make) and now its for the first time applied in the field of fitness and sports and it has its own patent registered for MIO or they state so ..
it reads the Heart rate through two bulbs on the bottom of the watch when in contact with your skin (hence the no chest strap option)

but is it that great ..?.

the watch is comfy , much like the Nike+ GPS watch it has holes on the strap that will hook into it to insure a nice fit
watch looks nice can be used in the regular day to day usage..

well it basically in option wise is very very close the to the FT1 polar options ... so that said ..
it will display :
1) hear rate at moment in time
2)continues reading
3)timer counting how much you have been training
4) it will give the average heart rate and time of the last session ONLY!!
Plus it connects to BLE (Bluetooth 4.0) so you can have further options depending on your mobile or App installed ..
Read more ›
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123 of 133 people found the following review helpful By Kevin on July 9, 2013
Color Name: Black/White Verified Purchase
Got this shortly after running my first full marathon. Even though I completed my run I wasn't satisfied with the results and looked into heartbeat monitors to better my performance. The MIO Alpha came top choice for me even for a blind first-buy. Most heart monitors out there require a strap to the chest or a constant touch of a sensor to get a reading. But with the Alpha the LED sensors give constant readings as well as a light indicator to show if you're in your targeted heart rate 'Zone'. Very convenient as well as more comfortable when you're focusing on running.

Battery power is also quite satisfactory. After charging my Alpha to full capacity the power indicator stays full-bar even after constant use. I rarely need to recharge it thus. When I take it off, I also use the charger device as a cover for the sensor beneath the watch so that serves a double function at least for me.

On the downside however, I'm not able to sync my Alpha to my Android smartphone via bluetooth. Apparently it only syncs with Apple iPhones. That's a real downer for me. Another con would be the inability to backlight, meaning unless I run in a well-lit place at night I'd only be able to see the LED zone indicator and not the readings. I understand though that this is still a first-gen technology, so I can't really expect that much yet.

Overall a very much recommended product for those looking for their first HRMs. Some people would gripe about the price of the Alpha. Granted, it does take quite a bit off the pocket, but for a reliable device such as the Alpha I'd say it's worth every penny spent.
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209 of 234 people found the following review helpful By Mark J. Wilson on June 28, 2013
Color Name: Black/White Verified Purchase
1. Frequently loses heart rate; directions say to tighten strap to avoid this happening, but you can only wear it so tight before it becomes uncomfortable.
2. When you lose contact and heart rate reading you have to scroll back through the settings to re-connect; messing up timing
3. The function buttons are too small and are not at all user friendly; to use them to scroll through features / settings you have to stop running / walking / swimming etc.

I was really looking forward to this product - so much that I purchased two of the them for me and my wife. I was VERY disappointed and ended up I returning both of them.
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127 of 141 people found the following review helpful By pj on August 10, 2013
Color Name: Black/Black
I've owned three heart rate monitors (Polar, Zephyr and Mio) over the last 12 years and this product is by far the least reliable. Granted, this is the first HRM that took a reading from my wrist rather than my chest, it goes to show that the technology just isn't quite there yet. Very disappointing as I was looking forward to ditching the dreaded chest strap. Although it provided very reliable readings, it was uncomfortable to wear and often had to be readjusted frequently under vigorous activities such as trail running.

The problem with the Mio is its reading often drops slowly from 150+ to 80-90 over the course of roughly a minute even if my activity level (and heart rate) remain virtually static. Sometimes it will shoot back up instantly to where it should be (150) or it will just sit at the 80-90 BPM level forever... or until I reset the HRM and reconnect again. On the chart, it looks like I literally stopped in my tracks and I just sat there resting while my heart rate slowly dropped... very misleading. While resetting it usually prevents the HRM from replicating the same problem during the same training session, it has dropped off several times in one training session before. I've tried to tighten the strap (to the point where it became uncomfortable) but that didn't help. There is also no correlation to ambient temperature, relative humidity or activity type (e.g. cycling, vigorous trail/mountain running or just jogging) as it will do it under all weather conditions and activity types I've subjected the HRM to. I think it may have something to do with a flaw in the algorithm used and less to do with it not being able to track the blood flow itself. Whatever the problem is, it makes a potentially decent product a major failure.
Read more ›
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Mio Alpha Heart Rate Monitor Sports Watch
This item: Mio Alpha Heart Rate Monitor Sports Watch
Price: $169.00
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