strong point to have his ear always close to hand, cà is convenient when such sounds deep in the pocket e number appears on the headset for the part traking I would be more circumspect, he not minore hurt by the number of steps against sleeping calculation function works well without any intervention, it detects itself when one layer. practical as it vibrates on your wrist if you get too far away from such, it would have been against by although it may have other notifications, email sms etc ....
questtion against autonomy from there it is easy I'd like five days without recharging
