Sony Battery and Travel DC Charger Kit with NP-BX1 Battery - Manual (Page 58)

Setting the language and the clock
GB
58
To cancel the date and time setting operation
Press the MENU button.
The date and time setup screen appears automatically when the power is
turned on for the first time or when the internal rechargeable backup battery
has been discharged. To reset the date and time, use the menu.
Maintaining the date and time setting
This camera has an internal rechargeable battery for maintaining the date
and time and other settings regardless of whether the power is on or off, or
the battery is installed or not.
Checking or resetting the date/time and area
MENU button t (Setup) t
[Date/Time Setup] or [Area Setting]
MENU button