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Mio ALPHA (Black) Heart Rate Sport Watch

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Mio ALPHA (Black) Heart Rate Sport Watch
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Lose the chest strap and get accurate heart rate on your wrist

  • Continuous heart rate monitoring offers a real time assessment of training intensity
  • No chest strap – so you can train with heart in comfort
  • Tested EKG accurate at performance speeds
  • Water resistant up to 30m (3 ATM)
  • Customize your workout with 3 user-settable heart rate zones
  • Connect to your favorite fitness apps & devices via Bluetooth® Smart (4.0)*
  • Mineral glass display shows time, exact heart rate, & exercise timer, so you can have to-the-second visual data on everything you need to know
  • Comes in 1 size (fits wrist sizes 145-198mm) View Sizing Chart
$169.00 USD
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Word On The Street

Since it's launch, Mio ALPHA heart rate sport watch has helped millions of runners, cyclists & triathletes train more efficiently and effectively. Here's what some of them have to say.




Joseph Gray


"I wear my Mio ALPHA during races and receive continuous heart rate readings without bearing the extra weight of a chest strap."

Annmarie Licatese


"My favorite piece of workout gear is my Mio ALPHA! I never leave for a run without it and even use it for strength and conditioning workouts!"

Jason Williams


"My personal training clients are loving the Mio ALPHA heart rate monitor watch!"

Kimberly Sawakta


"ALPHA helps me to work smarter, not harder, during my time at the gym. I'm able keep my heart rate in specific zones to maximize my workouts."

Richard Diaz


"Hottest device in heart rate training today!"

Chris Sheremeta


"I love how easily it connects to my phone via Bluetooth"


Mio Alpha Videos

Mio ALPHA Heart Rate Sport Watch Features

Natural Running Coach Richard Diaz recommends Mio ALPHA


The electro-optical cell in our heart rate sensor "senses" the volume of blood under your skin. From there, sophisticated algorithms are applied so that your heart’s true rhythm can be detected.

Mio Continuous Technology
Mio Continuous Technology


Wireless Connectivity

Connect to your favorite mobile fitness apps, such as Mio GO, Wahoo, Endomondo, Strava, and more via Bluetooth® Smart (4.0).




Accurate at high speeds

During extensive testing against the top heart rate chest strap brands, Mio ALPHA and LINK consistently performed with 99% EKG accuracy, even while running at speeds of up to 14.4 mph.



Stay in the zone
& on track

Heart rate training is proven to help you train more efficiently and effectively, so you can optimize your performance and maximize your workout. Mio ALPHA offers 3 customizable heart rate zones with LED lights that can tell you which zone you’re in at any given moment, so you can stay on track with your training goals.



Comfort. Form. Function.

Mio ALPHA delivers maximum performance in ultimate comfort. Its soft, durable silicon strap ensures a snug and comfortable fit – and with no need for a chest strap, you’ll be more comfortable than ever.



  • Material
  • Soft silicone
  • Display
  • LCD
  • Battery
  • Rechargeable li-poly battery with USB charger
  • Battery Life
  • Up to 20 hours of workout time
  • Up to 2 months without continuous heart rate monitoring on
  • Water Resistant
  • 30m (3 ATM)
  • Watch Function
  • Yes
  • Dimensions
  • Alpha Shadow (Black)
  • 263 x 44 x 30 mm (lxwxh)
  • Alpha Arctic (White)
  • 263 x 44 x 30 mm (lxwxh)
  • Alpha Indigo (Purple)
  • 234 x 44 x 30 mm (lxwxh)
  • Weight
  • Alpha Shadow (Black)
  • 55.6g
  • Alpha Arctic (White)
  • 55.6g
  • Alpha Indigo (Purple)
  • 49.5g
  • Sensors
  • Optical heart rate
  • Sync method
  • Bluetooth Smart (4.0)
  • Measures
  • EKG-accurate heart rate
  • Timers
  • Chronograph
  • Compatibility
  • iPhone® 4s/5/5c/5s/6/6 plus
  • iPod® touch 5
  • iPad® 3/4/air/mini
  • Samsung Galaxy s® 4/5
  • Samsung Note® 3
  • Google Nexus 4/5
  • Android 4.3 (Jelly Bean) and higher with Bluetooth Smart (4.0)

Mio ALPHA (Black) Heart Rate Sport Watch is rated 4.1696 out of 5 by 112.
Rated 4 out of 5 by from A former biker, I’m saddled with tachycardia and now have an IUD (pacemaker). Unfortunately, it can’t differentiate between a fast heart from exercising and a fast heart gone awry, so I risk being shocked when I bike. My Mio, set below the shock bar, allows me to exercise worry free. While it’s not a medical device, my Mio is as close to a consumer medical device as you can get. –Rich Poole(My Mio works best worn just below or above the elbow (arms too bony at the wrist). I wish you had an extender that temporarily lengthens the band for wear normally or there’s more muscle/fat. Made one with Velcro, elastic and cable ties. Can’t readily remove/reinstall but it works. Wanna see? Will provide a pic.)
Date published: 2015-01-01
Rated 1 out of 5 by from Not worth the price Using it for about half year, well, I would not say this watch it not good, but it just not worth the price.The biggest problem, it don't have any blacklight on it, so when you running at night, this watch almost useless, you only can use the LED light to know you are or not in the target zone.A watch in 2014 which you cannot use at night...Then the HR zone setting, you only can set the lowest and highest, and if your HR going out of the zone, the watch keep beeping, so whether you don't start the watch when you warming up, or you warming up with the beep sound.This watch only gives you the very basic and limited function for such price.If ask me will I buy this watch again? NO WAY.
Date published: 2015-01-01
Rated 4 out of 5 by from Good product but occasional issues finding a HR I purchased the Mio Alpha roughly 6 months ago because I occasionally go into V-tach when I exercise too hard due to some structural damage in my right ventricle. The heart rate moinitor works great and syncs up to my phone without any issues, but I've had issues with it detecting a heart rate from time to time when I'm lifting weights. I'll re-position it on my wrist, tighten the band, switch hands, etc. and it still won't work. It will eventually find the HR after turning it off and on, but it can be pretty frustrating to fidget with it when you're trying to get in and out of the gym quickly.
Date published: 2014-12-31
Rated 4 out of 5 by from Reliable & easy to use I have had this product for a year now, and I've used the heart rate monitor for a variety of exercises: Running, walking, skiing, rowing, cycling, weight lifting, soccer, baseball, football, etc. There isn't anything I've done that has outpaced its abilities, and I wear it every day during my 12 hour work shifts too. The battery also has a super-long life, accurate charge remaining readout, and I haven't had a problem with the contacts becoming corroded due to saline accumulation from the skin. The only thing I would change about this watch is to give it a light or photo cell / sensor that would brighten the display when in a dark environment. Overall this is a great watch and heart rate monitor, well worth the purchase.
Date published: 2014-12-31
Rated 4 out of 5 by from Happy to have Before purchasing Mio Alpha, I made a long research. I'm happy since I decided to buy. But two things to notice for me; it doesn't show time in 24h format. This is something that keeps it away from using like a normal watch. And second, because of hairy skin, sometimes it doesn't monitor my hart rate correct. So I started to wear it on the inner side of my arm.Overall I can say I'm happy to have it and recommend to my friends. Actually after I found it, my two other friends wanted to have so we purcahsed 3 pairs together. And we are all satisfied.
Date published: 2014-12-31
Rated 4 out of 5 by from Mio Review I brought it a month ago to replace my old MIO sport watch which I really liked. I like this one since you don't have to place your finger on it to get a heart rate readout. The size of the letters on the display are easy to read. I just wish it had a back light.
Date published: 2015-10-04
Rated 4 out of 5 by from Great HRM I purchased this to train my coaching clients. Very practical as you don't have to worry about constantly washing chest straps. They can see their target HR, and I can link it to my iPhone as well. I tested it and compared it to another chest strap on a different model at the same time and it seemed very consistent...possibly a slight delay when changing intensity compared to a chest strap, but not much. It seemed like there were less false highs compared to a chest strap too.I haven't needed to charge it yet, as I'm waiting for the battery to fully drain first on the first time, but when I did plug it in to my computer it kept giving a reading of 'not connected'....hope this is just a minor glitch and that when it's fully empty it will charge ok.
Date published: 2015-04-30
Rated 4 out of 5 by from Heart rate monitor I purchased the Mio Alpha just over 3 months ago & have been dry happy with it. It's as accurate as the chest band monitors but much more comfortable & easier to use. Until this purchase I have used a chest band monitor for my fitness training but would not revert back after the Mio Alpha.The downside to the Mio Alpha for me is:1. The clock is in whole minutes without seconds shown &2. There is no light within the dial which makes reading the time difficult when wearing the equipment as a watch only at night
Date published: 2014-12-31
  • 2015-10-06T17:24CST
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We offer shipping throughout the United States, Canada, Australia, New Zealand and some countries in Europe and Asia. Please see the list below for all countries that we deliver to.


 FREE Standard Delivery 
         5-7 business days 
Express Delivery (Canada and US only)
        2 to 4 business days - $30

Countries we deliver to: Unites States, Canada, Australia, New Zealand, UK (including Scotland, Wales & Northern Ireland), Republic of Ireland, France, France Metropolitan, Germany, Italy, Spain, Austria, Belgium, Netherlands, Luxembourg, Monaco, Portugal, Greece, Poland, Hungary, Czech Republic, Latvia, Lithuania, Estonia, Israel, Slovenia, Russian Federation Norway, Sweden, Finland, Switzerland, Denmark, Croatia, Japan, Hong Kong and Singapore. Note we do not ship to APO or FPO addresses.

General Shipping Info

  • We are able to process deliveries to residential or commercial addresses only, no deliveries to PO Boxes or hotels. Signature may be required upon delivery.
  • Deliveries are made on business days, Monday through Friday, excluding holidays. Holidays may add an extra day to delivery times.
  • Please note that orders may take up to 24 hours to be processed prior to shipping. Orders placed on Friday will be processed on Monday.
  • If there is no secure place for package delivery, you can choose to have your package delivered to your place of business.
  • US orders are shipped from the United States, Canadian orders are shipped from Canada, European orders are shipped from the UK, Australia and New Zealand orders are shipped from Hong Kong.
  • Packages that are refused will be refunded to the credit card originally used for the purchase, less any shipping costs. We are unable to refund shipping costs on refused deliveries.

International Deliveries

The customer will cover all additional charges such as customs, duties and taxes. Please contact the local customs office in the destination country for information regarding any applicable duties or taxes. Since duties and taxes vary by country and by what was ordered, we are not able to provide estimated cost. We are required by law to disclose the full value of the package contents and cannot alter this information. The customer will be responsible for the original shipping costs, as well as any duties, taxes and/or customs charges that were incurred if the package was been refused customs clearance.