It's been a week I wear day and night, there is absolutely mind pas.Il calculates everything, walking to a centimeter, sleep, it detects when you fall asleep and calculates the deep slumber slumbers light and if you had a good or bad sleeping. The headset I personally have not used but for others its is helpful. On the bracelet the caller's name is displayed, the number of steps, calorie burn, and the good fortune slumbers. Only little extra that would have been nice for me to see the email and sms. But of course I counsel this is a very good strap connected. On my Huawei Mate 7.