Looking for a fitness tracker, I came next to Polar and Gadwin on Fitbit. The CHARGE comes without HR and therefore was aware of so as Fitbit promises not waterproof. The tape I simply, wears ok, the shutter is used to and, in many open and close by maybe 1 year, the Temporal bless (or bracelet). The small display is easily scratched and you can read during physical activity hardly. I wear the Tracker on dominant arm (right) and the button you just have to use with your left hand (not easy). The battery (charging via a special connector on the bottom) holds about 4-5 days. Positive is the ease of use, the settings via the web interface, and the iOS app. Here you will be automatically supplied with easily interpretable graphics, can Competitions with people from the community (quite large) anleiern etc. For me, interesting readings steps, distance and level, on calories and other bells and whistles I am not interested, that's maybe interesting for people with notorious OB weight ;-) Overall, a fun gadget but nothing more.