Citizen CC1x Instruction Manual page 5

Before using this watch
After unpacking, the following must be carried out before using the watch:
◆ Checking the power reserve  Page 17
Check the charge level of the watch.
◆ Setting the World Time  Page 21
Select the city for which you want to indicate the time and date.
◆ Receiving the satellite time signal  Page 28
Correct the time by receiving the satellite time signal.
4
This watch has a rechargeable cell which is charged
by exposing the dial to light.
Expose the dial to light regularly to charge the watch.
For details of charging, see pages 12 to 19.