Joined: Sep 2018
Posts: 573
Changing
May 12 at 8:01 AM
the battery depends on the type of watch. Some backs screw off and need a special tool. Some are press fitted and come apart with a blade .
Internet search your watch brand and model and most likely you will find an "how to".
The press fitted ones are easy enough but some, like Seiko, need tools and resetting electronically.