Watch doesn not start after discharge and off during activity

Hello, my watch switched off during activity due to lack of power. When I come home, I connected charger, but nothing changed. Watch is still off and I cannot switch it on even after 2 hours on charger, looks like dead.
Any ideas, please?

0 Doktorko over 7 years ago

Update: after more than 3 hours on charger it was finally possible to switch on.