Review on 💙 Blue HealthSmart Sports Pulse Ring Heart Rate Monitor with Stopwatch, Clock, and Lanyard by Scott Walsh

I decided to purchase this product because I train "carelessly" and was curious about where I am during my workout. When I first put this thing on (it goes on my index finger) I was a little annoyed, but it wasn't anything I couldn't handle. During training I looked at it and once my pulse was 148, and after 30 seconds - 78 and returned again. I've tried turning it off and on again and reconfiguring it with different fingers. Did not help. If I ever decide to buy another one, I'll spend a few bucks more for something that works properly.