Dead smartwatch 2

[knut]

Got the watch today. Paired it with my Xperia Z1, allthough when I did, my phone started to pair with another Sony device I have, the SRS-BTX500. I downloaded the SUS to my PC and connected the watch as requested, but my PC (Win8.1) did not recognize the watch. Tried the same on a Win 7 PC, and the drivers were downloaded. When I updated the software on the watch, it went ok for a while, then I got a message that something was wrong. Disconnected the watch from the pc, and now it is all dead, ie no display. I have tried to hold the on/off button down for at least 20 seconds, but nothing happens. Help please...

[Uliwooly]

does the screen turn on when you connect it to a computer and/or wall charger? if it doesn't then take it back to the store 

[knut]

Still dead when I try to charge it. Funny thing is that when I pair it with the Z1, (NFC) it activates bluetooth on the Z1, which in turn starts looking for other previously paired devies. I will probably try to get my money back, the watch seems to be somewhat "unfinished"