A watch that does not require a battery change can save you the time of having to have a professional replacement. The Eco-Drive range of watches from Citizen charge themselves through perpetual movement of the arm creating kinetic energy. If you let the watch run down by leaving it inactive for a few days, then you will need to reset it after charging.
Unscrew the watch crown until you feel it pop free if you have a screw-down crown. Pull it out gently to the time-setting position.
Leave the crown out for 30 seconds, then push it back in.
Pull the watch crown out to the date-setting position. Turn the crown counter-clockwise to set the date.
Pull the watch crown out to the time-setting position. Turn the crown clockwise or counter-clockwise to set the watch time.
Push the crown back to its starting position. Screw it into the locking position if necessary.