chrisabraham OP t1_jdhx1rc wrote
Reply to comment by jens_omaniac in I know it's a dumb ABC watch but it might be one of the most beloved along with some beloved Casio ABC watches. I've had this forever. It's got an amazing NATO-style band. by chrisabraham
As a scuba diver I'm really careful about the o ring because the back really could be compromised. That's why G-Shock watches make it so hard to replace the battery and all you need for a Core is a nickel. Keep the oring clean and make sure it's not nicked or dry. If needed, a little silicon oil but wipe all the excess off. Good luck!
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