Mi band 2 hrx edition is good fitness tracar band but in mi band 2 hrx edition not heart rate moniter in band 3heart rate moniter and big display many function he is good fitness tracer I phurse mi band 3 he is best fitness band in the world I love mi band 3 also mi band 2 hrx edition my experience is very good in mi band 2 hrx edition. I give marks mi band 2 hrx edion ? out of ? he is top fitnesa tracker band in all band’aI use mi band 2 you also use mi band 2 hrx edition