CASIO BGW100-1
Owner's Manual

Module No. 2050
ABOUT THIS MANUAL
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2050-1

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� Button operations are indicated using the letters shown in the illustration. � Each section of this manual provides you with the information you need to perform operations in each mode. Further details and technical information can be found in the �REFERENCE� section.
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� Make sure you correctly input your name and blood type data. Once you input your data, take care that the watch is not borrowed by another person. Otherwise, emergency medical personnel may assume that your data applies to the person who borrowed the watch. � The default blood type screen setting when you first purchase the watch or after you change the battery is �-� for the blood type and �Rh *� for the Rh factor. To avoid problems caused by display of the wrong blood type, we recommend that you input your correct blood type data as soon as possible after purchasing the watch and after having the battery replaced. � CASIO COMPUTER CO., LTD. shall not be held liable to you or any third party for any losses or damages suffered through the misuse of data stored in the memory of this watch.

(MODE)

Warning!
Note the following important points concerning Identification Mode data stored in the memory of this watch. � SCUBA diver certificate number, passport number, and emergency contact number data stored in the memory of this watch can be misused whenever the watch is in the hands of another party. � To protect against the misuse of SCUBA diver certificate number, passport number, and emergency contact number data, input them in coded form that cannot be understood by others.
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GENERAL GUIDE
� Press M to change from mode to mode. � While in any mode hold down M for one second, to enter the Dive Time Measurement Mode. � In any mode, press B to illuminate the display.
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World Time Mode

Identification Mode

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Hold down M.
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Stopwatch Mode

Alarm Mode

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DIVE TIME ALM SIG

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TIMEKEEPING MODE
Month � Day Day of week

DIVE TIME MEASUREMENT MODE
Current time Mode indicator

In addition to normal timekeeping, use the Timekeeping Mode to set the current time and date. You can also view the Dive Time Measurement Mode log data. � For details on how to view the log data, see �Viewing Log Data�.

The Dive Time Measurement Mode lets you measure the total time you spend underwater while diving or snorkeling, and the amount of time spent on the surface (surface interval). The watch also stores one set of diving time data (total dive time and dive start time) into log memory for later recall.

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Calibrating the Seconds Count
1. In the Timekeeping Mode, hold down A until the seconds digits start to flash. 2. Press C to set the seconds count to OO. � Pressing C while the seconds count is in the range of 30 to 59 resets the seconds to OO and add 1 to the minutes. In the range of 00 to 29, the minutes count is unchanged. 3. Press A to return to the current time screen.
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DIVE TIME ALM SIG

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Warning!
For your own safety, never operate the buttons of the watch while underwater or while on the water�s surface. Perform button operations in a safe place after leaving the water.

Hour : Minutes Seconds PM indicator

Dive time

Setting the Time and Date
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1. In the Timekeeping Mode, hold down A until the seconds digits start to flash. 2. Press M to move the flashing in the sequence shown below to select other settings.
Hour Minutes Month 12/24-Hour Format Year

Before Diving/Snorkeling � Be sure to check if the battery power is low (check for low light intensity, a dim display, or the flashing indicator). If it is, do not use the watch for diving/snorkeling. � Make sure that the watch is set to the correct time. � Check the glass, case and band for cracks or chips. � Make sure that the band is fastened securely around your wrist. While Diving/Snorkeling � Always use the �buddy system� when diving � never dive alone. � Check to make sure that timer operation is being performed properly. � Take care when diving/snorkeling near rocks or coral to avoid scratching the watch. After Diving/Snorkeling To avoid corrosion, rinse your watch thoroughly with fresh water to remove salt water, dirt, etc. When possible, soak the watch in fresh water overnight to make sure that all salt is removed.

Seconds Day

3. While hour, minutes, year, month, or day is flashing, press C to increase the setting or B to decrease it. � When the 12/24-hour setting is selected, press C to toggle between 12-hour (12H) and 24-hour (24H) timekeeping. 4. Press A to return to the current time screen. Notes � The day of the week is automatically displayed in accordance with the date (year, month, and day) settings. � The year can be set in the range of 1995 to 2039. � The watch�s built-in full automatic calendar automatically make allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after the replacement of the watch�s battery.

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Dive Time Measurement Mode

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Timekeeping Mode

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