Any G-Shock Experts know what's happening to my Gwa1100 Gravity Defier?

Qfruits

New Member
Recently bought The watch and instructions were all in Japanese.
manage to get it all set right thanks to t'internet and looking around for things.
However after heading off to bed, the watch goes ballistic and starts beeping like a possessed watch, hands moving around, alarm beeping away. Couldn't stop it, couldn't change functions nothing.
Eventually had to stuff under pillow to keep it quite from us.
Happened around 2350hrs
Placed the watch by the window for a few Hours hoping abit of solar power charge would maybe sort out low battery spasm. around 1650hrs the watch done the same and start doing its thing.
Captured it on the phone and placed it on YOuTube for advice and linked it below.

Can someone advise me wtf is happening ?

https://youtu.be/Toxbr5WsFsM
 
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