A simple and efficient tracker which should quickly evolve

I chose this model after studying the "competition," and it must be said that this model is atypical. But do not be fooled by appearances when his possibilities.
First, you must know that this comment is written beginning in January 2014 with firmware versions and application (1.70) available at that time. Misfit has updated its product often in recent months, so it is likely that this comment is out of date in a few weeks if I do not change it myself.
So the main product is really small (less than 3 cm in diameter) and thin. There is metal for outdoors. It comes with two rubber accessories that can wear it as a watch or as a clip or pin. It is powered by a standard coin cell battery (which changes easily) to give it about 4 months of "juice". We'll see.
The data collected are transmitted via Bluetooth to a smartphone application (iOS and Android). We need to manually sync the tracker. In fact, focused on display, it synchronizes when I launch the application, if the phone is near, without the Shine is placed on it as it says.
One of the uses I'll watch in the coming days, it will be the "sleeping".
By cons, if he gives the time, it's still a little gadget.
An excellent product at this time, to now see in time.

Update 27/02: almost two months after the start of the use of Shine, I am very satisfied. The product has been no default, except for a rather fragile surface scratches. With regular updates to the application, it automatically detects sleep, and I'm pretty impressed with the results.
For now, it is that good, and no low battery sign.