CASIO G300-3A
Owner's Manual

Operation Guide 3750
Alarm Operation
The alarm sounds at the preset time for about 20 seconds, regardless of the mode the watch is in. In the case of the snooze alarm, the alarm operation is performed a total of seven times, every five minutes, or until you turn the alarm off. � To stop the alarm tone after it starts to sound, press any button. � Performing any one of the following operations during a 5-minute interval between snooze alarms cancels the current snooze alarm operation. Displaying the Timekeeping Mode setting screen Displaying the SNZ setting screen

Backlight Precautions
The backlight uses an EL (electro-luminescent) panel that causes the entire display to glow for easy reading in the dark. In any mode, press B to illuminate the display for about two seconds. � The electro-luminescent panel that provides illumination loses power after very long use. � The illumination provided by the backlight may be hard to see when viewed under direct sunlight. � The watch may emit an audible sound whenever the display is illuminated. This is due to vibration of the EL panel used for illumination, and does not indicate malfunction. � The backlight automatically turns off whenever an alarm sounds. � Frequent use of the backlight shortens the battery life.

To test the alarm In the Alarm Mode, hold down D to sound the alarm. To turn an alarm on and off 1. In the Alarm Mode, use D to select an alarm. On/Off status 2. Press A to toggle it on (ON displayed) and off (OF displayed). � Turning on a one-time alarm (AL1through AL4) displays the alarm on indicator on its Alarm Mode screen. � Turning on the snooze alarm (SNZ) displays the alarm on indicator and snooze alarm indicator on the Alarm Mode snooze alarm screen. Alarm on indicator � In all modes, the alarm on indicator is shown for any Snooze alarm indicator alarm that is currently turned on. � The alarm on indicator flashes while the alarm is sounding. � The snooze alarm indicator flashes during the 5-minute intervals between alarms. To turn the Hourly Time Signal on and off 1. In the Alarm Mode, use D to select the Hourly Time On/Off status Signal (SIG). 2. Press A to toggle it on (ON displayed) and off (OF displayed). � The Hourly Time Signal on indicator is shown on the display in all modes while the Hourly Time Signal is turned on.
Hourly time signal on indicator

City Code Table
City Code ��� HNL ANC LAX DEN CHI NYC City Honolulu Anchorage Los Angeles Denver Chicago New York GMT Differential �11.0 �10.0 �09.0 �08.0 �07.0 �06.0 �05.0 �04.0 �03.0 �02.0 �01.0 +00.0 +01.0 +02.0 +03.0 +03.5 +04.0 +04.5 +05.0 +05.5 +06.0 +06.5 +07.0 +08.0 Other major cities in same time zone Pago Pago Papeete Nome San Francisco, Las Vegas, Vancouver, Seattle/Tacoma, Dawson City El Paso, Edmonton Houston, Dallas/Fort Worth, New Orleans, Mexico City, Winnipeg Montreal, Detroit, Miami, Boston, Panama City, Havana, Lima, Bogota La Paz, Santiago, Port Of Spain Sao Paulo, Buenos Aires, Brasilia, Montevideo Praia Dublin, Lisbon, Casablanca, Dakar, Abidjan Milan, Rome, Madrid, Amsterdam, Algiers, Hamburg, Frankfurt, Vienna, Stockholm, Berlin Athens, Helsinki, Istanbul, Beirut, Damascus, Cape Town Kuwait, Riyadh, Aden, Addis Ababa, Nairobi, Moscow Shiraz Abu Dhabi, Muscat Male Mumbai, Kolkata Colombo Jakarta, Phnom Penh, Hanoi, Vientiane Singapore, Kuala Lumpur, Beijing, Taipei, Manila, Perth, Ulaanbaatar Seoul, Pyongyang Darwin Melbourne, Guam, Rabaul Port Vila Christchurch, Nadi, Nauru Island

CCS Caracas RIO Rio De Janeiro ��� ��� GMT LON London PAR CAI JRS JED THR DXB KBL KHI DEL DAC RGN BKK HKG Paris Cairo Jerusalem Jeddah Tehran Dubai Kabul Karachi Delhi Dhaka Yangon Bangkok Hong Kong

Reference
This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.

Graphic Area
The following describes the information indicated by the graphic area in each mode.

TYO Tokyo +09.0 ADL Adelaide +09.5 SYD Sydney +10.0 NOU Noumea +11.0 WLG Wellington +12.0 *Based on data as of June 2004.

Graphic area

Mode Timekeeping World Time Countdown Timer Stopwatch Alarm Hand Setting

Graphic Area Timekeeping Mode seconds Timekeeping Mode seconds Countdown time minutes Stopwatch time seconds No indication No indication

Auto Return Feature
If you leave a screen with flashing digits on the display for two or three minutes without performing any operation, the watch automatically exits the setting screen.

Scrolling
The B and D buttons are used in various modes and setting screens to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.

Initial Screens
When you enter the World Time or Alarm Mode, the data you were viewing when you last exited the mode appears first.

Timekeeping
� Resetting the seconds to 00 while the current count is in the range of 30 to 59 causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to 00 without changing the minutes. � With the 12-hour format, the P (PM) indicator appears on the display for times in the range of noon to 11:59 p.m. and no indicator appears for times in the range of midnight to 11:59 a.m. � With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without any indicator. � The year can be set in the range of 2000 to 2039. � The watch�s built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch�s batteries replaced.

World Time

� The World Time Mode times are calculated from the current Home City time setting in the Timekeeping Mode, using the Greenwich Mean Time (GMT) differentials associated with each city code. � The GMT differential is a value that indicates the time difference between Greenwich Mean Time and the time zone where a city is located. � GMT differential is calculated by this watch based on Universal Time Coordinated (UTC) data.

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