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 3.7932 out of 5 by 237.
Rated 4 out of 5 by from Excellent transmitter, but strap wears out quickly The Polar H7 works great! Much less finicky than Garmin. However, the chest strap only lasts about 9 months. I tried replacing the batteries, cleaning the strap, wetting the sensors. Finally Polar told me the straps need replacing every 9-12 months! I wish they (and Garmin) make this more clear when buying these HR monitoring systems.
Date published: 2016-04-05
Rated 5 out of 5 by from Consistant and dependable Great product. Use it every time I do cardio workout
Date published: 2016-04-01
Rated 1 out of 5 by from wont stay in place During swimming the monitor will roll down my chest. It needs an over shoulder strap to keep in place
Date published: 2016-04-01
Rated 5 out of 5 by from I love it! I love this heart rate monitor, and defiantly made the right choice buying the H7. Its durable and accurate. It even is waterproof! While at first I was worried it may not fit me, it fits me perfectly fine!
Date published: 2016-03-31
Rated 5 out of 5 by from Easy, accurate heart rate I received this for Christmas and it has been a great addition to my workouts. I pair this with my Polar M400 watch for accurate HR and a great way to record my workouts. Don't believe the haters out there this has been working great for 3 months and I see no reason it will not continue to work great. Best HR monitor in the business.
Date published: 2016-03-27
Rated 5 out of 5 by from My Polar has enabled me to change for the better My M400 has become my coach and "friendly conscience", helping me measure, raise and "groove" my physical activity. It's a great product and Polar flow is a very useful companion piece.
Date published: 2016-03-27
Rated 5 out of 5 by from Accurate I've had this sensor 9 months Pros; ease of use, accurate, features, read by gym equipment (e.g. Treadmill) at same time as my M400, ease of cleaning. Cons; battery life, strap life is also on the short side
Date published: 2016-03-27
Rated 5 out of 5 by from Much improved with detachable sensor Received the M400 as a gift and has performed to my satisfaction; very happy with new and improved chest strap with detachable sensor; very easy to clean after a hard work-out.
Date published: 2016-03-26
  • 2016-04-30T07:00CST
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