My smart watch just works when it's connected to the charger

[Alexpy90]

Hi, I bought my smart watch just 2 months ago, and left it in my car charging.. well, the next day when I saw that the battery was fully charged, disconnected the watch and puted it on the armband it doesn't turned on anymore, no vibrations, no display, nothing. But when I connect it to the cable, the displays turns on and shows that the battery is fully charged, and the watch also turns on and is able to connect to my Xperia Z, but only when it's connected.. When the charger looses contact with the watch everything is over.
Can anybody help me?

[Thommo]

Sounds like the battery has malfunctioned and can no longer hold a charge - You could try to run a repair using this thread although the process may differ slightly http://talk.sonymobile.com/t5/Wireless-accessories/How-to-check-if-you-have-the-latest-firmware-on-y...

If your watch is only 2 months old then it should still have warranty so if the above fails then I'd seek redress through your warranty via the place of purchase.