I had the samest, problem as other reviewers -- this gadget is impressive at first, then it stops working. I replaced the battery twice with no results. And I can't get the company to respond to my requests for support via any medium. It's too bad because while it works, it's perfect.

I had an old HRT that had a "watch" I had to wear. This ties right into my phone and the Polar app is very good (although it records distance on my bike different than Strava). It's a very responsive strap and it's great to have to push yourself in different workouts.

Bought what I thought would be the best. Wanted to use it on different exercise equipment but also wanted to monitor my HR with the app. Works on equipment but can’t use the app without divulging all my personal info.

I have been using my H10 for several weeks to conduct morning orthostatic tests. The wireless connection (I'm using bluetooth) has been fast and reliable. The strap is comfortable and picks up my hearth rhythm very fast.

I've had at least three of these. They just, out of nowhere, stop working. Most of the time, if you remove the battery, unconnect it, reconnect it, then it will work fine. But it's annoying that I have to do this about every two weeks.

I was getting poor quality readings with my other BT HRM so I bought the PolarH10. I measure my heart rate variability in the morning with the H10 and my Android phone and get great signal strength.

I bought the Polar because of the extremely poor quality of the Wahoo Tickr I had previously. I thought the Polar brand stood for quality given their long track record. Very disappointed! After just 4 months on the bike. My reading would stop and the device would just take a nap for a while.

So far this HR strap works well. It is far more comfortable than the 4iiii which I purchased last year and already stopped working.

The Polar H10 worked well in the beginning - connected to my Garmin Edge 830 easily and showed what I would consider accurate readings. Fast-forward several months and now, the H10 appears to lose it's Bluetooth connection while on a ride, generally after a couple of hours pedaling.

Works really well with the Polar Beat app. But both the unit and the app seem a bit buggy - as in needing to reinstall the app from time to time and take the battery out of the unit and re-pair. The web summary of training is excellent.