I like 32 1

The device is simple, easy and discreet.
It serves me to watch and via the application, followed by what I do the day. It remains a "gadget" for me, for the number of steps, but it's not bad to evaluate and also cardio when doing sports.

Sleep is well managed and also estimates the duration 'in bed'. No need to synchronize the time, the watch stores the data (for how long?).

I blame the non-waterproof side, ie to take my shower (I prefer not to risk) and the number of not too sensitive for me. The system adds not when you eat, for example because you move your arm. The system on my mobile phone, in a pocket, is less prone to movement when seated.

As for the bracelet sizes, SI size only influences the size of the bracelet, so I can say that the device is too large hair. One can clearly see a space on the sides of the inflexible shape of the watch (without strap). If size small size reduced a little, I'll take the other size xD.

I recommend it if you want cardio becomes a gimmick if it does not sport.