I really use this band 1year.it is a very good band.the battery backup almost 27-30days.and its show almost 95% correct result.but is has a very biggest problem there are on looking display in this band.so al time use mobile phone fro this reason I fill some problem.but over all it is a very good band.its looks very good and as a band it is very stylish band.
you thik you buy a good band you mist be buy this band.you will be happy by use this band