I bought this to accompany my Bryton Rider 50 cycle computer and it works just fine with it. The device paired with it first time with no issues whatsoever, continues to do so each time I use it and it seems pretty accurate too, especially bearing in mind it's reasonably low price. If there is one thing to mark it down on it's the strap. It's a pretty rudimentary elastic strap with a fairly basic hook mechanism to secure it and it doesn't work too well. I had some initial issues with it slipping down my torso in use, leading to it ending up around my midriff after a few minutes of riding, which of course is far from ideal. I have now tightened it considerably, beyond what I expected to be required, and although it seems to remain in place it never feels 100% secure. It's not a case of using another strap either as it has the heart rate sensing pads built into it.
Overall then I'm satisfied with it, it does what it's supposed to with good accuracy... but the strap is what holds it back from a 5 star rating.
The heart rate monitor works flawlessly and was very simple to hook up to the Bryton Rider 35 GPS unit.
It is also very comfortable against the skin, no problems so far.
Works flawlessly, quite comfortable. Can't indicate how long the battery lasts as I've only had it a month or so. Not much to say really.
Great product connects perfectly with my computer, quickly despatched as always.