Casio LW-22 / LW-100 Watch User Manual

User Manual

This manual provides instructions for operating the Casio LW-100 and LW-22 watches, which use Module No. 1602 and 1665 respectively. All operations for both modules are identical. The illustrations in this manual are based on Module 1602.

Battery

The battery installed at the factory may be discharged during storage and shipping. If the battery shows signs of depletion (e.g., dim indicator), replace the battery at your CASIO dealer or distributor.

Water Resistance

Watches are classified by water resistance rating (from I to V) according to their protection against water. Please refer to the table below for proper usage.

Notes:

• Rating I watches are not waterproof; avoid getting any moisture on them.
• Do not press buttons underwater.
• Buttons can be pressed underwater, but do not press recessed buttons. If seawater gets on the watch, rinse it thoroughly with fresh water and dry it.
• May be used for diving (except for depths requiring a helium-oxygen gas mixture).

Some water-resistant watches come with leather bands. Do not wear such models while swimming or in any other situation where the band may be immersed in water.

You may notice a whitish powder on the band. This substance is harmless to your skin or clothing and can be removed by wiping the band with a cloth.

If moisture is left on a resin band or if such watches are kept in a high-humidity environment, the band may warp, crack, or break. To preserve the resin band, wipe off dirt or moisture with a soft cloth as soon as possible.

For watches with fluorescent bands and cases:

• Prolonged exposure to direct sunlight can cause fluorescence to fade.
• Prolonged contact with moisture can cause fluorescence to fade. Wipe moisture from the surface as soon as possible.
• Prolonged contact with other damp surfaces can cause fluorescence to fade. Wipe moisture from the fluorescent surface as soon as possible and avoid contact with other surfaces.
• Strong friction between the fluorescent printed surface and another surface can cause the printed color to transfer to the other surface.

Precautions for Watch Usage

• Do not attempt to open the case or remove the back cover.
• The water-proof packing must be replaced every 2 to 3 years.
• If water or condensation gets inside the watch, have it inspected or repaired immediately by your CASIO dealer or distributor.
• Do not expose the watch to excessively high temperatures.
• Although the watch is shock-resistant, avoid subjecting it to strong impacts or dropping it onto hard surfaces.
• Do not wear the band too tightly. A finger should fit comfortably under the band.
• Use a soft cloth to clean the watch and band. A dry cloth or one lightly dampened with a mild soap solution is recommended. Do not use volatile chemicals such as benzine, thinner, or spray cleaners.
• Always store the watch in a dry place when not in use.
• Do not expose the watch to aggressive chemicals such as benzine, cleaning agents, or aerosols. Chemical reactions with such agents can damage the packing, case, and finish.
• Some watch bands have specifications printed on them. Clean such bands carefully to avoid rubbing off the printing.
• For watches with resin bands:
• You may notice a whitish powder on the band. This substance is harmless to your skin or clothing and can be removed by wiping the band with a cloth.
• If moisture is left on a resin band or if such watches are kept in a high-humidity environment, the band may warp, crack, or break. To preserve the resin band, wipe off dirt or moisture with a soft cloth as soon as possible.
• For watches with fluorescent bands and cases:
• Prolonged exposure to direct sunlight can cause fluorescence to fade.
• Prolonged contact with moisture can cause fluorescence to fade. Wipe moisture from the surface as soon as possible.
• Prolonged contact with other damp surfaces can cause fluorescence to fade. Wipe moisture from the fluorescent surface as soon as possible and avoid contact with other surfaces.
• Strong friction between the fluorescent printed surface and another surface can cause the printed color to transfer to the other surface.

CASIO COMPUTER CO., LTD. is not responsible for any claims by third parties that may arise from the use of these watches.

General Instructions

• Press the [Button B] to cycle through modes. Each mode is explained in the following sections.
• After completing operations in any mode, press [Button B] to return to the Timekeeping Mode.

Timekeeping Mode

• In the Timekeeping Mode, press [Button C] to switch between 12-hour and 24-hour formats.
• The day of the week is indicated as follows:
• SU: Sunday, MO: Monday, TU: Tuesday, WE: Wednesday, TH: Thursday, FR: Friday, SA: Saturday

About the Backlight

• Press [Button A] in any mode to illuminate the display.
• The watch backlight uses electro-luminescent (EL) elements that lose their brightness over time.
• Frequent use of the backlight will shorten battery life.

Alarm Mode

If the daily alarm is set, an alarm sound will be heard for 20 seconds at the set time each day. Press [Button A] to stop the alarm. If the hourly time signal is turned on, the watch will beep at the start of every hour.

Setting the Alarm

1. In the Alarm Mode, press and hold [Button A] until the hour digits start flashing, indicating they are selected for setting.
2. Press [Button A] to cycle through the flashing digits in the following sequence: Hour, Minute.
3. Press [Button C] to increase the selected digit. Holding down [Button C] will advance the digits at high speed.
4. After setting the time, press [Button A] to return to the Alarm Mode without flashing digits. The alarm will be automatically enabled at this point.

If the watch reaches the Alarm Mode without flashing digits, you can press [Button A] again to make the hour digits flash.

The alarm format (12-hour or 24-hour) matches the format selected in the Timekeeping Mode.

Checking the Alarm Sound

Press and hold [Button C] in the Alarm Mode to sound the alarm.

Enabling and Disabling the Daily Alarm and Hourly Time Signal

Press [Button C] in the Alarm Mode to cycle through the alarm status in the following sequence:

• Daily Alarm and Hourly Time Signal: Both ON
• Daily Alarm Only
• Hourly Time Signal Only
• Both OFF

Stopwatch Mode

The Stopwatch Mode allows you to measure elapsed time, split times, and record the first and second place times. The measurement range is up to 59 minutes and 59.99 seconds. If the measured interval exceeds this, the time resets and starts counting again.

Measurement Types:

• a) Elapsed Time Measurement:
• [Button C] starts the stopwatch.
• [Button C] stops the stopwatch.
• [Button C] restarts the stopwatch.
• [Button C] resets the stopwatch.
• b) Split Time Measurement:
• [Button C] starts the stopwatch.
• [Button A] splits the time.
• [Button A] cancels the split and continues timing.
• [Button C] stops the stopwatch.
• [Button A] resets the stopwatch.
• c) 1st and 2nd Place Time Measurement:
• [Button C] starts the stopwatch.
• [Button A] records the 1st place time and starts timing for 2nd place.
• [Button A] records the 2nd place time.
• [Button C] stops the stopwatch.
• [Button A] resets the stopwatch.

Time Setting Mode

Setting the Time and Date

1. Press [Button B] to enter the Time Setting Mode.
2. The second digits will flash, indicating they are selected for setting.
3. Press [Button A] to cycle through the flashing digits in the following sequence: Seconds, Hour, Minutes, Day of Week, Date, Month.
4. When the seconds digit is flashing, press [Button C] to reset the seconds to "00". If the seconds are between 30 and 50 when reset to "00", one minute is added to the minutes. If the seconds are between 00 and 29, the minutes remain unchanged.
5. When other digits (except seconds) are flashing, press [Button C] to increase the numerical value. Holding down [Button C] will advance the digits at high speed.
6. After setting the time and date, press [Button B] to return to the Timekeeping Mode.

If you do not press any button for several minutes while a digit is flashing, the flashing will stop, and the watch will automatically return to the Timekeeping Mode.

Technical Specifications

• Accuracy: ± 30 seconds per month at normal temperature.
• Timekeeping Mode: Displays Hours, Minutes, Seconds, AM/PM indicator, Month, Date, and Day of the week.
• Time Format: Switchable between 12-hour and 24-hour formats.
• Calendar: Auto-calendar, set for 28 days in February.
• Alarm Mode: Daily alarm, hourly time signal.
• Stopwatch Mode: Measurement capabilities up to 59 minutes 59.99 seconds. Measurement modes include elapsed time, split time, and 1st/2nd place times. Measurement accuracy: 1/100 second.
• Other:
• Backlight: Electro-luminescent elements.
• Battery: One lithium battery (Type: CR1220).
• Battery life: Approximately 2 years, assuming 20 seconds of alarm use per day and 1 second of backlight use per day.

Manufacturer Information

• Product Name: Wristwatch, electronic / electro-mechanical quartz (men's/women's)
• Brand: CASIO
• Manufacturer: CASIO COMPUTER Co., Ltd.
• Manufacturer Address: 6-2, Hon-machi 1-chome, Shibuya-ku, Tokyo 151-8543, Japan
• Importer: OOO "Casio", Moscow, Sushchevskaya St., Bldg. 27, Str. 1, Russia
• Country of Manufacture: Japan
• Warranty Period: 1 year
• Address for Claims: As specified in the warranty certificate.
• Product Compliance: Conforms to GOST 26270-98 (clause 4.35). Certificate of Conformity No. ROSS JP. АЯ 46.Д00003.