My smartwatch MN2 won't turn on if it doesn't connect to usb (without charging)

could you help me to answer this question: why my smartwach MN2 can't stand without charging? the battery is full but it can't work even turn on. please help me, i purchased it 1 month ago.

Sounds like there might be something wrong with it. Try to update/repair it via PC Companion at first. Get back to me with the results.
http://www.sonymobile.com/update
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