Bluetooth Smart Watch Fitness Tracker Sport Watch Heart Rate Monitor Blood Pressure Smart Wristband for Android iOS Review

I looked closely for a long time (the small number of ratings and reviews frightened off) and finally decided to buy . The first day everything is fine, synchronization, pulse measurements, steps, etc., but already on the second day there are glitches, it is impossible to measure anything, the dial itself has changed to some kind of uninformative, an attempt reinstalling the application led to a crash . Well, the return works well)