Compatible with dozens of leading fitness apps, including Polar Beat

Compatible with iPhone 4S and later, and with selected Android devices including Samsung Galaxy S3 and S4 using Android 4.3 or later. Check all compatible devices

Transfers heart rate information while swimming with products which support 5kHz transmission



  • H7 heart rate sensor
  • H7 heart rate sensor
  • H7 heart rate sensor


H7 heart rate sensor is rated 3.7 out of 5 by 276.
Rated 5 out of 5 by from I was really concerned about purchasing this after reading some of the reviews but for $39 on Amazon I figured I'd give it try and I'm very happy I did. It connected to my phone (LG Nexus 5x) without any problem at all. I've tested it against a couple of other HR monitors that I have available and the readings are spot-on. My only complaint is that the strap can be irritating if you don't cover the threads near the attachment loop. Oh yeah, the battery cover was a little hard to get off initially. I first tried removing the cover with a penny (usa) and it started to strip the cover's notch. My advise is to use a nickle instead and apply good downward pressure when turning. That worked like a charm.
Date published: 2017-01-07
Rated 1 out of 5 by from Don't believe the hype. Go on Amazon and look at the reviews. Pairing issue going on for years!!! Seems like they don't work right out of the box, or they work for a couple of months and THEN die. But end result is the same. They DONT work! Please please please do not waste your money. You've been warned.
Date published: 2017-01-02
Rated 1 out of 5 by from problems connectong bought to use on my bike Trainer could connect to my phone app on a regular basis. do not recommend to use with a phone app
Date published: 2016-12-29
Rated 5 out of 5 by from Comfortable, changeable battery I have had one of these for well over a year. When it didn't work, I ordered this replacement. Love that the Bluetooth works with both of my Runtastic apps. Discovered, however, the problem was that I needed to repair the strap when this wouldn't work immediately. Now old one and this one work. I've had to try and remember to grab the strap if I headed to the gym instead of biking. Now, I have one for each gear bag, not a bad thing even if I didn't need a new one. Incidentally, this is waterproof -- I've used it swimming with the iPhone at pool's edge and it works fine.
Date published: 2016-12-26
Rated 5 out of 5 by from Essential gear Essential to my exercise regimen, keeps me in the HR range.
Date published: 2016-12-25
Rated 1 out of 5 by from Don't waste your money Wife and i each owned and used H7 in daily workouts. Worked great with old app on Android. New app came out and hasn't worked since. even purchased new H7 thinking older version was the problem. Will not stay connected to Polar App. just finished working out and amazingly my HR was constant at 114 for 23 minutes then jumped to 127 for the next 19 minutes. at least according to the app. I do cardio circuit with weights and HR varies significantly depending on intensity and rest breaks. Don't waste your money if you want to monitor your HR effectively.
Date published: 2016-12-23
Rated 4 out of 5 by from Great Until Time to Replace Battery The battery compartment is the most aggravating part of the Bluetooth sensor. Getting it open & then after so many times, it becomes increasingly harder. I even take mine in to a professional & it still eventually strips. I have had to buy another one because of this. Polar definitely needs to make the battery rechargeable or include a key to open the back. I do LOVE the tracking & the PolarBeat app and unfortunately, will probably buy another when I can no longer open the back again.
Date published: 2016-12-22
Rated 5 out of 5 by from Love this product Super accurate and works well with several apps. For a chest monitor, it is comfortable and easy to get accustomed to wearing. If you are seriously monitoring your workout, this is a terrific tool to do so.
Date published: 2016-12-19
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