Casio 3069 Manual page 132

• Though this watch is designed to receive both time data (hour, minutes,
seconds) and date data (year, month, day), certain signal conditions can
limit reception to time data only.
• If you are in an area where proper time calibration signal reception is
impossible, the watch keeps the time with the precision noted in
"Specifications".
• If you have problems with proper time calibration signal reception or if the
time setting is wrong after signal reception, check your current city code,
DST (summer time) (page E-117), and auto receive settings (page E-27).
• The Home City setting reverts to the initial default of
whenever the battery power level drops to Level 5 or when you have the
rechargeable battery replaced. If this happens, change the Home City to the
setting you want (page E-13).
E-130
TYO
(Tokyo)