Watch battery

Where is a good place in downtown Zihuatanejo to have a watch battery replaced.
Thank you

I don't know where in town to buy 312 batteries that most watches use but I learned how to replace my watch batteries myself. Just pop the back with a small knife, remove the battery and put in a new one. Secure the back of the watch. Done

Check out this video, "how to change watch battery with knife" https://share.google/ja5ANBWByNH5TMgCu