Or more specifically, my wife's! I've spent some time searching for the correct battery reference no., for my Wife's Seamaster 2262.50, though, regardless of brand, I have been able to find nothing. Maxell or Seizaken have been recommended, but without taking the back off, I have not been able to find a reference point from which to order. Any help would be appreciated. Other than that, I'll just take the back off, ( I attempt to keep this to a minimum) and move on from there. Thanks Mark