That watch might take two batteries when it's open there should be a big battery which is a lithium but under it will be a silver oxide batter that needs to be replaced if there is not then the analog has to be lubricated and spun out the worst case senerial is u will have to replace the movement remember all was change ur batteries asap when the go dead. Digital batteries always last longer than the analog batts do
Btw, I’m available to help over the phone in case u need at
https://www.6ya.com/expert/gerald_b9936683ef6d97c6
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