Casio BG-50, BG-55, BG-61 Watch User Manual

Introduction

Welcome to your new Casio watch. Please read this manual carefully before use.

Battery

The battery installed at the factory may be discharged during storage and shipping. If the battery indicator dims (? dimming), replace the battery at your CASIO dealer or distributor.

Water Resistance

Watches are classified by water resistance levels from I to V. Check the table below for correct usage conditions.

Notes:

• Level I: These watches are not waterproof; avoid exposure to any moisture.
• Level III: Do not press buttons underwater.
• Level IV: Buttons can be pressed underwater, but do not press recessed buttons. If seawater gets on the watch, rinse it thoroughly with fresh water and wipe dry.
• Level V: Suitable for diving (except for depths requiring a helium-oxygen gas mixture).
• Some waterproof watches come with leather straps. Do not wear these models while swimming or in any other situation where the strap may be immersed in water.

Precautions for Use

• Do not attempt to open the case or remove the back cover.
• The water and dust-proof packing should be replaced every 2-3 years.
• If water or condensation enters the watch, take it to your CASIO dealer or distributor immediately.
• Do not expose the watch to excessively high temperatures.
• Although the watch has a shock-resistant mechanism, avoid strong impacts or dropping it on hard surfaces.
• Do not overtighten the strap. A finger should fit comfortably under the strap.
• For cleaning the watch and strap, use a soft cloth, dry or dampened with a mild soap solution. Do not use volatile chemical solvents (like gasoline, thinners, cleaning sprays, etc.).
• Always store the watch in a dry place when not in use.
• Do not expose the watch to aggressive chemicals such as gasoline, cleaning agents, or aerosols. Chemical reactions with these agents can damage the gasket, case, and finish.
• Some watch straps have their specifications printed on them. Clean these straps carefully to avoid erasing the printing.
• For watches with plastic straps: A white powdery substance may appear on the strap. This is harmless to your skin or clothing and can be wiped off with a cloth. If moisture is left on a plastic strap, or if such watches are kept in a humid environment, the strap may warp, crack, or tear. To preserve the plastic strap, wipe off dirt or moisture promptly with a soft cloth.
• For watches with fluorescent bands and cases: Prolonged exposure to direct sunlight can cause the fluorescence color to fade. Prolonged contact with moisture can also cause the fluorescence color to fade. Wipe off moisture promptly. Prolonged contact of a wet watch with any other surface may cause the fluorescent color to transfer. Be careful to keep the fluorescent surface dry and avoid contact with other surfaces. Strong friction of a surface with printed fluorescent patterns against another surface may cause the fluorescent ink to transfer to that surface.

CASIO COMPUTER CO., LTD. is not responsible for any damage that may occur from the use of this watch and does not accept claims from third parties.

General Mode Description

The watch has several modes: Current Time, World Time, Memo, World Temperature, Alarm, Timer, and Stopwatch. Pressing the 'C' button cycles through modes in the following order: Current Time → World Time → Memo → World Temperature → Alarm → Timer → Stopwatch → Current Time.

Pressing the 'B' button in any mode activates the display backlight.

Functions for modules 2785 and 2791 are identical. Diagrams in this manual are for module 2785.

Current Time Mode

This mode is used for setting and viewing the time and date. The analog and digital times are independent and must be set separately.

Pressing the 'D' button cycles through display formats: Day of the week, Month-Date, AM/PM indicator, Hour:Minute, World Time display.

Setting Time and Date:

1. In Current Time Mode, press and hold Button 'A' until the seconds digits flash, indicating the setting mode.
2. Press Button 'C' to move the flashing digit to the next setting: Seconds → DST → Date → Month → Year → Hour → Minute → City Code → 12/24-Hour Format.
3. When the desired digit is flashing, use Button 'D' (+) and Button 'B' (-) to change it.
4. Press Button 'A' to exit the setting mode.

Day of the Week: The day of the week is set automatically according to the date.

Daylight Saving Time (DST):

• In Current Time Mode, press and hold Button 'A' until seconds flash.
• Press Button 'C' to display the DST setting screen.
• Press Button 'D' to toggle between DST ON (indicator appears) and DST OFF.
• Press Button 'A' to exit. Note: DST setting is not possible if Greenwich Mean Time (GMT) is selected as the Home City.

12/24-Hour Format: Press Button 'D' in the Hour/Minute setting screen to switch between 12-hour (A/P indicator) and 24-hour formats.

City Code: Use Button 'D' and Button 'B' to select your Home City code. The world time display will adjust accordingly.

World Time Display: The World Time display shows the time in a selected city. Press Button 'D' to cycle through city codes.

World Time Mode

This mode allows you to view the current time in any of the 27 cities (29 time zones) worldwide. Press Button 'D' to scroll through cities eastward, and Button 'B' to scroll westward.

Setting DST for World Time: In World Time Mode, select a city, then press and hold Button 'A' to toggle DST ON/OFF for that specific city. The DST indicator (☀️) appears when enabled.

Memo Mode

This mode allows you to store text data, such as electronic addresses or web page URLs. Up to 315 characters can be stored, with each entry limited to 63 characters. This allows for approximately 40 entries of 7 characters each, or 5 entries of 63 characters.

Creating a New Entry:

1. In Memo Mode, press Button 'D' and Button 'B' simultaneously to view memory usage.
2. Press and hold Button 'A' until the cursor flashes.
3. Enter text using Button 'D' to cycle through characters and Button 'C' to move the cursor. Use Button 'B' to select symbols.
4. Press Button 'A' to save the entry.

Reading Entries: In Memo Mode, press Button 'D' to scroll through saved entries.

Editing Entries: Navigate to the entry, press and hold Button 'A' until the cursor flashes, then use Button 'C' to move the cursor and Buttons 'D'/'B' to change characters. Press Button 'A' to save.

Deleting Entries: Navigate to the entry, press and hold Button 'A' until the cursor flashes, then press Buttons 'B' and 'D' simultaneously to delete. Press Button 'A' to confirm or exit.

World Temperature Mode

Displays the highest and lowest average monthly temperatures for 30 cities. Average high and low temperatures alternate on the screen every 2 seconds.

Viewing Temperature Data: In World Temperature Mode, press Button 'D' to scroll through cities. Press Button 'A' to advance to the next month's data.

Changing Units: Press Buttons 'B' and 'D' simultaneously to switch temperature units between Celsius (°C) and Fahrenheit (°F).

Alarm Mode

Set a daily alarm (?) or an hourly chime (?). The alarm sounds for 20 seconds.

Setting the Alarm Time:

1. In Alarm Mode, press and hold Button 'A' until the hour digits flash. The alarm is automatically enabled.
2. Press Button 'C' to switch the flashing between hour and minute digits.
3. Use Button 'D' (+) and Button 'B' (-) to adjust the values. Pay attention to the AM/PM indicator (A/P) in 12-hour format.
4. Press Button 'A' to save the alarm time.

Checking the Alarm Sound: In Alarm Mode, press and hold Button 'D' to test the alarm sound.

Enabling/Disabling Alarms: In Alarm Mode, press Button 'D' to cycle through alarm states: Alarm OFF, Alarm ON, Hourly Chime OFF, Hourly Chime ON.

The alarm indicator flashes during an alarm and remains on screen in all modes.

Timer Mode

Countdown timer can be set from 1 minute to 24 hours. An alarm sounds when the countdown reaches zero.

Auto-Repeat: The timer can be set to automatically restart from the preset time when the countdown finishes (? indicator appears).

Setting the Timer:

1. In Timer Mode, press and hold Button 'A' until the hour digits flash.
2. Press Button 'C' to cycle through Hour → Minute → Auto-Repeat setting.
3. Use Button 'D' and Button 'B' to adjust values. Press Button 'D' to toggle Auto-Repeat ON/OFF.
4. Press Button 'A' to save settings.

Timer Operation: Press Button 'D' to start/pause the countdown. Press Button 'B' (after pausing with 'D') to stop and reset.

Stopwatch Mode

Measures elapsed time, split times, and lap times. Records the first and second place finishes in competitions.

Operation:

• Press Button 'D' to start/stop the stopwatch.
• Press Button 'A' to record split times or restart after stopping.
• Press Button 'B' to reset the stopwatch to zero.
• To measure split times: Press 'D' to start, 'A' to record a split, 'A' again to resume, 'A' again to record the next split, 'D' to stop, 'B' to reset.
• To measure lap times (first and second place): Press 'D' to start, 'A' to record lap 1, 'D' to stop lap 1 and start lap 2, 'A' to record lap 2, 'D' to stop, 'B' to reset.

The stopwatch has a range of 59 minutes, 59.99 seconds.

Hand Setting Mode

Use this mode to adjust the analog hands when they do not match the digital time. The analog and digital time are independent.

Setting the Analog Hands:

1. In Hand Setting Mode, press and hold Button 'A' until the digital time flashes.
2. Use Button 'D' to advance the hands clockwise (20-second increments). Press and hold Button 'D' while pressing Button 'B' for faster advancement. Press any button to stop.
3. Press Button 'A' to exit. The hands will not stop automatically at the correct position; manual stopping is required.

Demonstration Function

This function continuously cycles through display contents to demonstrate watch capabilities. To activate, in Current Time Mode, press and hold Button 'C' for 3 seconds until an audible signal is heard. To deactivate, press any button except 'B'. This function does not work in setting modes.

Graphic Display

In Current Time and World Time modes, a graph appears on the screen, displaying hour values. Hour values marked with a • advance across the screen from left to right.

The '☀️' marker appears between 6:00 AM and 5:59 PM. The '?' marker appears between 6:00 PM and 5:59 AM.

Text Entry (Memo Mode)

Use Button 'B' and Button 'D' to scroll through characters (a-z, A-Z, 0-9, symbols) at the cursor position. Use Button 'C' to move the cursor to the right. Press Button 'A' to save.

Auto-Return

If no button is pressed for two or three minutes in setting modes, or for two or three minutes in Memo, World Time, or Alarm modes, the watch will automatically exit the mode and return to Current Time Mode, saving any entered values.

Specifications

• Accuracy: ±30 seconds per month (at normal temperatures)
• Display: 2 hands (hour, minute)
• Current Time Mode: Hour, minute, second, AM/PM indicator, date, day of the week. 12/24-hour format switching. Auto-calendar programmed from 2000 to 2039. Home city setting (31 cities), DST, world time.
• Memo Mode: Memory capacity: up to 315 characters. Memory usage indicator, data protection.
• World Time Mode: 30 cities (27 time zones). DST setting.
• World Temperature Mode: Highest and lowest average monthly temperatures for 30 cities.
• Alarm Mode: Daily alarm, hourly chime.
• Timer Mode: Step: 1 second. Setting range: 1 minute to 24 hours (1-minute increments). Auto-repeat function.
• Stopwatch Mode: Measurement step: 1/100 second. Measuring range: 59 minutes, 59.99 seconds. Measurement modes: elapsed time, split times, lap times (1st and 2nd place).
• Additional Features: Backlight, Demonstration Function.
• Battery: One SR927W battery.
• Battery Life: Approximately 2 years (assuming: 2 seconds/day backlight use; 10 seconds/day alarm use).

City Codes

A table listing city codes and their corresponding time differences from GMT is provided for World Time settings.

Product Information

Product Name: Wrist Electronic / Electro-Mechanical Quartz Watch (Men's/Women's)

Brand: CASIO

Manufacturer: CASIO COMPUTER Co., Ltd. (6-2, Hon-machi 1-chome, Shibuya-ku, Tokyo 151-8543, Japan)

Importer: OOO "Casio", Moscow, Russia.

Country of Manufacture: Japan

Warranty Period: 1 year

Compliance: Product complies with GOST 26270-98 (Clause 4.35). Certificate of Conformity No. POCC JP. АЯ46.Д00003.

Data as of December 2001.