CASIO Watch User Manual

Module NO. 3297

Models: BG-6900 / BG-6901 / BG-6902

Important Information

Battery

The battery installed at the factory is discharged during delivery and storage. If you notice signs of insufficient power (e.g., dim display), contact an authorized CASIO service center or distributor for replacement.

Water Resistance

All watches are classified by water resistance level (I to V). Ensure you use your watch according to its rating.

• Level I: Not water-resistant. Avoid all moisture.
• Level II (WATER RESISTANT): Suitable for splashes, rain, and washing hands. Not suitable for swimming or diving.
• Level III (50 M WATER RESISTANT): Suitable for showering and short-term swimming. Not suitable for diving.
• Level IV (100 M WATER RESISTANT): Suitable for regular swimming and snorkeling. Not suitable for scuba diving.
• Level V (200 M WATER RESISTANT): Suitable for scuba diving (excluding depths requiring helium-oxygen mixtures).

Never press buttons underwater, adjust the crown, or attempt to open the case underwater. After exposure to saltwater, rinse thoroughly with fresh water and dry.

Care for Plastic Bands

A white powdery substance may appear on plastic bands. This is harmless and can be wiped off. Prolonged exposure to sweat or moisture can damage or crack the band. Wipe the band with a soft cloth to ensure longevity.

Care for Fluorescent Cases and Bands

Direct sunlight or prolonged contact with moisture can cause fluorescent colors to fade. Wipe off any moisture immediately.

Condensation

Condensation may form on the inside of the glass due to rapid temperature changes. This is normal and not a defect.

Disclaimer

CASIO COMPUTER CO., LTD. is not responsible for any damage arising from the use of this watch.

General Operation

Mode Switching

Press button C to cycle through modes.

Light

Press button L in any mode to illuminate the display.

Timekeeping Mode

This mode is used for setting and viewing the current time and date.

Setting Time and Date

Time in this mode is set relative to Coordinated Universal Time (UTC). First, set the UTC offset.

1. In Timekeeping Mode, press and hold button A until the seconds start flashing, indicating the setting mode.
2. Press button C to cycle through the settings: Seconds, Year, Month, Day, Hour, Minute, DST.
3. When a setting is flashing, use buttons D (+) or B (-) to change it.
4. Press button A to exit setting mode. The day of the week is set automatically based on the date.

Daylight Saving Time (DST)

DST advances the time by one hour. Not all countries use DST.

1. In Timekeeping Mode, press and hold button A until seconds flash.
2. Press button C until the DST setting screen appears.
3. Use button D to turn DST ON (indicator DST appears) or OFF.
4. Press button A to exit. The DST indicator appears on the screen when DST is active.

12/24-Hour Format

In Timekeeping Mode, press button D to switch between 12-hour (PM indicator for afternoon) and 24-hour formats. This setting applies to all modes.

World Time Mode

Displays the current time in 48 cities (29 time zones) worldwide.

Selecting a City

In World Time Mode, press button D to cycle through city codes. Refer to the "City Code Table" for details.

Setting DST for World Time

To change the standard/daylight saving time setting for a specific city:

1. In World Time Mode, use buttons D or B to display the desired city code.
2. Press and hold button A to toggle DST ON (DST indicator appears) or OFF (DST indicator disappears).

Note: This setting only affects the currently displayed city. Other cities are not affected.

Stopwatch Mode

Measure elapsed time, split times, and two finish times. Supports auto-start.

• Measurement Limit: 23 hours, 59 minutes, 59.99 seconds. The stopwatch resets to zero and continues counting if this limit is reached.
• Operations:
• Start/Stop: Button D
• Split/Lap Time: Button B (while running)
• Reset: Button B (while stopped)
• Displaying Split Times: After splitting, press B to view lap times. Press B again to return to the current elapsed time.
• Two Finish Times: After the first runner finishes (button D), record their time (button B), then press D for the second runner, and B to record their time.

Auto-Start

When auto-start is activated, the watch initiates a 5-second countdown, after which the stopwatch starts automatically. A beep sounds for the last three seconds of the countdown. Pressing D during the countdown starts the stopwatch immediately.

Timer Mode

Set a countdown timer from 1 minute to 24 hours. Features auto-repeat and stage signals.

Setting the Timer

In Timer Mode, press and hold button A until the hour digits flash to enter setting mode.

1. Press C to cycle through settings: Hours, Minutes, Auto-Repeat, Stage Signals.
2. Use buttons D (+) or B (-) to adjust the flashing value.
3. To set the timer for 24 hours, set the hours to 0:00.
4. Press A to exit setting mode.

Auto-Repeat

If auto-repeat is ON, the timer restarts automatically when it reaches zero. If OFF, the timer stops at zero. Press D during auto-repeat to pause; press D again to resume. Press B to reset to the initial setting.

Countdown End Signal

A signal sounds when the timer reaches zero. If stage signals are OFF, the signal lasts 10 seconds or until any button is pressed. If stage signals are ON, the end signal lasts 1 second.

Stage Signals

Signals can be set for different stages of the countdown:

• From 5 minutes to the end: 4 short beeps every minute.
• Last 30 seconds: 4 short beeps.
• Last 10 seconds: 1 short beep per second.

Alarm Mode

Set up to 3 multi-function alarms (AL1, AL2, SNZ) and an hourly chime (SIG).

Setting Alarm Time and Date

1. In Alarm Mode, use buttons D and B to select the alarm indicator (AL1, AL2, SNZ, SIG) you want to set.
2. Press and hold button A until the hour digits flash to enter setting mode.
3. Press C to select the setting to change: Hour, Minute, Month, Day.
4. Use buttons D (+) or B (-) to adjust the flashing value. For 12-hour format, note the PM indicator.
5. Press A to exit setting mode.

Alarm Functionality

Alarms sound at the set time/date for 10 seconds. The SNZ alarm repeats every 5 minutes up to 7 times or until manually stopped. Pressing any button stops the current alarm sound. Snooze repeats are interrupted by certain operations like time setting.

Checking Alarms

In Alarm Mode, press and hold button D to test the alarm sound.

Turning Alarms On/Off

1. In Alarm Mode, use buttons D or B to select the alarm indicator (AL1, AL2, SNZ).
2. Press button A to toggle the alarm ON or OFF. The indicator appears on the screen when the alarm is active in any mode.

Hourly Chime

Turn the hourly chime (SIG) ON or OFF using buttons D and A in Alarm Mode. The SIG indicator appears when active.

Backlight

The electroluminescent panel provides illumination for reading in the dark.

Turning On Backlight

Press button L in any mode to activate the backlight.

Backlight Duration Setting

1. In Timekeeping Mode, press and hold button A until seconds flash.
2. Press button B to select backlight duration: 3 seconds (indicator appears) or 1.5 seconds (indicator appears).
3. Press button A to confirm.

Sound Signals

Button Operation Sound

You can enable or disable the sound that occurs when buttons are pressed. In any mode (except during setting operations), press and hold button C. The MUTE indicator appears on the screen when button sounds are OFF.

Other Signals

Alarms, hourly chimes, timer signals, and stopwatch auto-start signals will sound regardless of the button operation sound setting.

Auto Return

The watch automatically returns to Timekeeping Mode if no operations are performed for approximately two to three minutes in modes other than Timekeeping Mode.

Reference Information

Graphical Area

The graphical area displays mode-specific information:

Light Indicator (SYNC)

When enabled, the backlight activates when an alarm, hourly chime, timer signal, or stopwatch auto-start signal occurs. The SYNC indicator briefly appears when entering Stopwatch, Timer, or Alarm modes if light indicator is ON.

Backlight Precautions

• Backlight may be difficult to see in direct sunlight.
• Backlight turns off automatically when any alarm sounds.
• Frequent use of the backlight can drain the battery.

Technical Specifications

• Accuracy: ±30 seconds per month (at normal temperature)
• Timekeeping: Hour, minute, second, AM/PM, month, day, day of the week
• Time Format: 12-hour and 24-hour
• Calendar System: Fully automatic calendar programmed from the year 2000 to 2099.
• Other: Daylight Saving Time (DST) / Standard Time; UTC offset
• World Time: 48 cities (29 time zones)
• Alarm: 3 multi-function alarms (one with snooze function); hourly chime
• Timer: Unit of measure: 1 second. Countdown range: 1 minute to 24 hours (in 1-minute or 1-hour increments). Features: auto-repeat, timer signals.
• Stopwatch: Unit of measure: 1/100 second. Measurement limits: 23:59'59.99". Measurement modes: elapsed time, split time, two finish times. Feature: auto-start.
• Backlight: Electroluminescent panel, selectable duration (1.5 or 3 seconds), button operation sound ON/OFF, light signal.
• Power: One lithium battery (CR2016). Approximate battery life: 5 years (under specific usage conditions: 10 seconds of alarm daily with light signal; one timer countdown per week with sound/light signals; one stopwatch use per week with auto-start/light signals; one backlight use per day for 1.5 seconds).

Product Information

Product Name: Electronic/electro-mechanical quartz wristwatches (men/women)

Brand: CASIO

Manufacturer: CASIO COMPUTER Co., Ltd.

Manufacturer Address: 1-6-2, Hon-machi 1-chome, Shibuya-ku, Tokyo 151-8543, Japan

Importer: OOO "Casio", 127015, Russia, Moscow, ul. Butyrskaya, d. 77

Warranty Period: 1 year

Address for Authorized Claims: As specified in the warranty card.

City Code Table

This table lists city codes, their corresponding UTC offsets, and notes on time zone changes.

Notes: Data as of December 2010. World time and DST rules vary by country. Specific notes are included regarding changes in Russian time zones and Venezuela's UTC offset.