Review on POWR LABS Bluetooth Heart Rate Monitor Armband: Optimal Tracking for Polar, Wahoo, and Garmin by Daniel Ton

I saw this product and was surprised that the battery is long lasting and rechargeable. It paired seamlessly with my Lezyne GPS bike computer as well as my phone. I will use an armband when traveling when my chest strap finally gives out (not for long which is why I bought this device). I took a 4iii chest machine and Powrlabs for a walk to compare readings and each time I checked they were within a few bpm. If it's as accurate as my chest strap, that's good enough for me. Due to the long battery life, I currently also use it as an HRM when tracking sleep on my phone. In the morning there is enough battery power to go out on the bike. The battery on the chest strap doesn't last that long!