I just replaced the battery and now it won't let me set the watch, how do I do that?
mcdevito75 here, If you replaced the battery yourself you may have moved the quatrz movement and mis-aligned the buttons the thier contact spot on the quartz movement. You"ll have to open the back nd check by pushing gently on each button 1 at a time to make sure each button is makeing contact at the right spot on the quartz movement, also even if the battery is new it can still be weak or dead as they have a shelf life, also you may need the exact battery number Casio recommends, a small watch repair shop in your area can advise. The 2 buttons you need to set your watch are MODE and SET. --------- Press and maybe hold in the MODE button, 2--3 seconds, MODE button usually on the right side of watch caseing, see the display flashing, now press set to set each function, (hour, minute etc.) press MODE after ecah function is set, (hour, minute etc.) once everything is set, press MODE again to see steady display.