I have been using it for one month now and its really work and fine . I am also swimming and showering with it and for me its work good and fine . the battery last about 15 to 20 days, which is much better then most of the famous brand in the market and it is a consider price.
This is product really for a serious sportsman. it is a very small and bulky, quality so good and excellent this is a not cheap product made in market really so helpful in life and all sport game .you can set band to vibrate if there is incoming call, set alarm, also incoming messenger like whatsapp, facebook etc . this product looks so good and amazing, attractive and cool.