Zenwatch wont charge - Black screen

So I've had my zenwatch for about a week now and lastnight it was working perfectly fine but this morning I woke up and my screen was black. I placed it on the charging cradle (which normally triggers the screen to turn on) this time nothing happens, the white charging indicator light on the cradle lights up but the screen does not cut on. I've tried holding down the power button, cleaning off the charging prongs, even using the usb of a pc for trickle charging but nothing seems to wake the screen up. Has anyone else ran into a similar problem? Know of a possible solution?

Thanks