We've been using it for a year and a half now. The bracelet is worn by a child from 5 years old. As they say, both in fire and in water, we were at the sea, we go to the pool, in the summer we often fell on the asphalt. After a year I changed the battery, I looked at the instructions on the Internet. The bracelet was badly worn. I downloaded the application to my phone and the child plays the game that is in the application for achievements. The child is happy, does not take off the clock, has learned to recognize the time.
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