Senahid Muratovic posted an answer for this Citizen Watches Citizen Eco Drive Perpetual Atomic Mens Watch CB0010-53A:
"http://www.citizenwatch.com/en-us/support/setting-instructions/"
Senahid Muratovic posted an answer for this Citizen Eco-Drive BL006056H Wrist Watch:
"No need to take the back cover off or anything like that. You don't need jeweler either...."