About products and suppliers:
Alibaba.com offers 10752 activity tracker products. About 45% % of these are smart watches, 14%% are smart bracelets. 

A wide variety of activity tracker  options are available to you,  such as m, s.You can also choose from touch screen, app control and ip67 waterproof activity tracker,As well as from 320x240, 128x128, and 160x128. And whether activity tracker is silica gel, rubber, or {3}.