Casio G'z One Manual De Usuario

You can also charge the 
battery by directly 
connecting the AC 
Charger to the Accessory 
Connector Port located at 
the bottom of the handset. 

k Opening and Closing the Accessory 
  Connector Port Cover

 To open the Accessory Connector Port cover, 

pinch it between your thumb and index finger 
and pull it open.

 To close the port cover, push the center of the 

port cover into the Accessory Connector Port.

 Make sure the port cover is completely closed.

Failure to completely reseal the Accessory Connector 
Port after charging may result in damage if the phone 
is exposed to water.

The charge time varies depending upon the battery 
level.