By Alvin Alexander. Last updated: June 4, 2016
If you have a Moto 360 smartwatch that won’t respond to anything — it’s dead, frozen, locked up, etc. — the Moto 360 manual says that you can “press and hold the power button for 25 seconds to force a power down.” You can then turn the watch back on as usual.
I haven’t had this problem with my Moto 360, but I wanted to note this here as I’m about to throw the manual out.
Note that if you want to just restart the Moto 360, you can do that through the Settings menu.