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 287.
Rated 1 out of 5 by from Chest Strap cuts! I've been using this heart rate sensor for about a year now. Everything seemed fine, until about 6 months in; the chest strap started cutting my skin (it's the original cloth strap that came with the sensor). I read reviews on how to fix this problem. The only fix I have found is to tighten the strap to the point it makes breathing difficult. I'm so disappointed. Never had any issues with my old T-31. With technology changes, I need a blue-tooth sensor.
Date published: 2017-04-22
Rated 5 out of 5 by from I use it every day during my workouts It's convenient, easy to sync with my iPhone and the app I use to track my routines. Love it!
Date published: 2017-04-11
Rated 1 out of 5 by from Confusing apps and sync connection Just got the H7 and took us hours to figure out how to sync it with iPhone. After trying numerous combinations and permutations of settings it finally started to sync. Now for some reason we have 30 minutes of fast walking which took place over the small distance of 200 m. Crazy, seriously!. Hope this device does not become a FitBit catastrophe which we replaced it with. For new users the difference between Polar Beat and Polar Flow is confusing and infuriating. We spent to much time to create accounts in order to determine what each does!. Honestly the whole experience of the new purchase and the battle to figure out how to operate it left a bad taste in my mouth.
Date published: 2017-04-09
Rated 5 out of 5 by from Has worked great for years I have used this monitor for over three years and love it. I don't use the Ap however, I use my digifit ap. It did stop pairing with my phone at one point, after verifying that the battery wasn't the problem, I contacted customer service and they sent me a new monitor. They were extremely helpful and courteous.
Date published: 2017-03-01
Rated 2 out of 5 by from Okay device but could be much better This device is okay at best. In terms of accuracy, there is no question that a chest strap is the most accurate but this device takes a while to start reading. I moisten the chest strap sensor and it still takes up to 10 mins to accurately and reliably record my heart rate. The strap it self is poorly designed. The latching mechanism is terrible and it often comes off during an intense work out. Finally, its almost impossible to get the device open to change the battery. Very basic design.
Date published: 2017-02-15
Rated 3 out of 5 by from Works great & pairs w/ my A300, but uncomfortable! I was really excited about this product and the Bluetooth capabilities. They hit the nail on the head with that capability. But I am experiencing chafing every time I wear the chest strap with this sensor and go for a run! How uncomfortable! I feel like I have a permanent mark on my chest. It has to be something with the shape of the sensor because the old sensor doesn't bother me.
Date published: 2017-02-14
Rated 3 out of 5 by from Too many drop-outs I do a variety of workouts including bootcamps and BodyPump and am experiencing consistent drop outs whenever I am not standing (e.g. doing chest presses, burpees, etc.). I have used other heart rate monitors with far less disconnections.
Date published: 2017-02-13
Rated 3 out of 5 by from Not what I needed I was looking for a heart rate sensor that I could use with my new Nautilus elliptical. I looked on the Polar Web page under accessories and the only heart rate monitor listed was the H7. There were no details that indicated the H7 would or would not function as an uncoded transmitter. I bought it since it was the only option on display and I imagined that it work with all the exercise machines that interface with a heart rate sensor. When it arrived, it did not work and customer service told me about the T31 which can be found by entering T31 in the search field. So, Polar needs to make clear the distinctions between coded and uncoded transmission and which heart rate sensors are appropriate for.which.need. The T31 should be listed on the same accessory page as the H7 with an explanation of their different uses.
Date published: 2017-02-13
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