CASIO Watch User Manual

General Care and Precautions

To ensure the longevity and proper functioning of your Casio watch, please observe the following precautions:

• Avoid exposing the watch to extreme temperatures.
• Handle the watch with care and avoid dropping it, even though it is designed for active daily use.
• Do not fasten the watch strap too tightly; ensure a finger can fit between your wrist and the strap.
• For cleaning, use a dry, soft cloth. If necessary, use a soft cloth dampened with a water solution of mild neutral detergent. Never use volatile agents like gasoline, thinners, spray cleaners, etc.
• When not in use, store the watch in a dry place.
• Prevent exposure to gasoline, cleaning solvents, spray aerosols, adhesives, paint, etc. Chemical reactions with these materials can damage gaskets, the case, and the watch's finish.
• Some models feature silk-screened designs on the strap. Clean these straps carefully to avoid damaging the graphics.

Important Information

Battery

The battery installed at the factory may be discharged during shipping and storage. If you notice signs of insufficient power, such as a dim display, replace the battery at an authorized CASIO service center or dealer.

Water Resistance

For all categories of watches, avoid the following actions while underwater:

• Pressing buttons.
• Adjusting the crown.

If the watch is exposed to saltwater, rinse it thoroughly with fresh water and dry it completely.

Do not wear watches with leather straps while swimming. Avoid prolonged contact of leather straps with water.

Care for Plastic Straps

A white powdery substance may appear on plastic straps. This substance is harmless and can be removed by wiping with a cloth. Sweat or moisture, or storage in high humidity, can damage, break, or crack plastic straps. To ensure a long service life, wipe plastic straps clean of dirt and water with a soft cloth whenever possible.

Care for Fluorescent Cases and Straps

Prolonged exposure to direct sunlight may cause the fluorescent color to gradually fade. Prolonged contact with moisture can also cause fading. Wipe off any moisture from the watch surface as soon as possible. Contact with other wet surfaces can also lead to discoloration. Ensure fluorescent surfaces are dry and avoid contact with other surfaces.

Water Resistance Table

Watches are classified into five levels (I to V) based on their water resistance. Consult the table below to understand the appropriate usage for your watch's rating:

Notes:

• Strong friction of a surface with applied fluorescent paint against another surface may transfer the paint.
• Condensation may form on the inside of the glass during significant temperature changes. This is a normal physical phenomenon and not a defect.
• CASIO COMPUTER CO., LTD. is not responsible for any damage that may occur from the use of this watch, nor does it accept claims from third parties.
• Rating I: Not water resistant. Avoid all moisture.
• Rating II (WR): Water resistant according to ISO 2281. Brief contact with water is acceptable.
• Rating III (5 Bar/50 meters): Can withstand water pressure equivalent to 5 Bar; suitable for showering and brief swimming.
• Rating IV (10 Bar/100 meters): Suitable for regular swimming and skin diving.
• Rating V (20 Bar/200 meters): Suitable for scuba diving (excluding depths requiring helium-oxygen mixtures).

Watch Care

• Never attempt to open the case or remove the back cover yourself.
• The rubber gasket, which protects the watch from water and dust, should be replaced every 2-3 years.
• If moisture enters the watch, have it checked immediately by your dealer or a CASIO distributor.

Mode Selection

The diagram shows the sequence for switching between modes and the indicators displayed for each mode. Press the 'C' button to switch modes. The watch will automatically return to the Timekeeping Mode if no operation is performed in the Calculator or Alarm Mode for 5-6 minutes.

Diagram Description (Page 7): The diagram illustrates the transitions between modes: Timekeeping, Alarm, Dual Time, and Stopwatch. It shows indicators for the Alarm ON, Hourly Chime ON, AM/PM, Time, and Mode.

Timekeeping Mode

The Timekeeping Mode displays the current time, date, and day of the week. The display includes indicators for AM/PM, day of the week (e.g., SU, MO, TU, WE, TH, FR, SA), month, day, and year.

Diagram Description (Page 8): This diagram shows the Timekeeping Mode display, including Hour, Minute, Second, AM/PM indicator, Day of Week, Month, Day, and Year. It also indicates the buttons used for setting: 'C' to select parameters, 'B' to enter/exit setting, '+' for AM/PM or 12/24 hour format, and digital buttons for input.

Setting the Time and Date

1. In Timekeeping Mode, press the 'B' button to enter the setting mode.
2. Press the 'C' button to cycle through the parameters to be set in the following order: Seconds, AM/PM, Hours (tens, units), Minutes (tens, units), Year, Month, Day.
3. Use the '+' button to set the AM/PM indicator or switch between 12-hour and 24-hour formats.
4. Use the digital buttons to input the desired value for the selected parameter.
5. Press the 'B' button to finish the setting.

Alarm Mode

The Alarm Mode allows you to set a daily alarm and an hourly chime.

Diagram Description (Page 8): This diagram shows the Alarm Mode, indicating the alarm ON indicator (III) and the hourly chime ON indicator (4). It also shows the display for setting the alarm time (Hour, Minute) and the buttons used for operation.

• To turn the alarm ON or OFF, press button '4'. The alarm indicator (III) will appear or disappear. When ON, the alarm sounds for 20 seconds at the set time daily. Press any button to stop the alarm.
• To turn the hourly chime ON or OFF, press button 'B'. The hourly chime indicator (4) will appear or disappear. When ON, a beep sounds at the start of each hour.

Setting the Alarm Time

1. Press button 'B' to enter the alarm time setting.
2. Press the 'PM' button to set the time before or after noon.
3. Use the digital buttons to set the alarm time in the following sequence: Hours (tens, units), Minutes (tens, units).
4. Press button 'B' to complete the setting.

When the 24-hour format is set, the alarm time will also be displayed in that format.

Dual Time Mode

The Dual Time Mode displays a second time zone.

Diagram Description (Page 13): This diagram shows the Dual Time Mode display and the setting procedure. It indicates the display for Hours and Minutes and the buttons used for setting.

Setting the Dual Time

1. Press button 'B' to enter the dual time setting.
2. Press the 'PM' button to set the time before or after noon.
3. Use the digital buttons to set the dual time in the following sequence: Hours (tens, units), Minutes (tens, units).
4. Press button 'B' to complete the setting.

When the 24-hour format is set, the dual time will also be displayed in that format.

Calculator Mode

This mode functions as an 8-digit calculator.

Diagram Description (Page 10): The calculator diagram shows the keypad layout with number buttons, operation buttons (+, -, ×, ÷), decimal point (PM button), clear button (C), and function buttons. It also depicts the display, showing an 8-digit input, an operation indicator, and an overflow indicator ('E').

• Input up to 8 digits (7 digits for negative numbers).
• Use the 'PM' button to input a decimal point.
• Use the operation buttons (+, -, ×, ÷) for calculations.
• Press 'C' to correct an incorrect input.
• Press '=' to get the answer.
• An 'E' indicates an overflow error, occurring when a result exceeds 8 digits (7 for negative numbers). Press 'C' to clear the error.
• Constant Calculation: Use the 'K' button to set a constant value for operations.
• Power Calculation: Use the 'x^y' function (implied by button presses in examples).
• To save battery, press 'B' to turn off button sounds. Press 'B' again to turn them back on.

Calculation Examples:

• Basic Calculation: 3 × 4 = 12
• Calculation with Constant: (12 - 0.5) × 3 + 7 = 4.9285714... (Example shows setting 4 as constant, then 12-0.5, then x3, then +7)
• Power Calculation: 3^2 = 9 (Example shows 3, x^y, 2, =)

Stopwatch Mode

The stopwatch measures elapsed time, split times, and two-finish times.

Diagram Description (Page 14): This diagram shows the Stopwatch Mode display, including indicators like 'ST' (Stopwatch Time). It shows the measurement of 00:09.98 with 03 indicating 1/100th of a second. It also shows the buttons used for operation.

Diagram Description (Page 15): This diagram illustrates the various stopwatch measurement operations: Elapsed Time (Start, Stop, Reset), Split Time (Start, Split, Unsplit, Stop, Reset), and Two-Finish Times (Start, Split, Unsplit, Stop, Reset). It shows how intermediate and final times are recorded.

• The stopwatch beeps upon starting/stopping and every 10 minutes of operation.
• Measurement range: 23 hours 59 minutes 59.99 seconds. The count resets to zero after reaching the maximum.
• Measurement Types:
  • Elapsed Time: Press '+' to start, press '+' again to stop, press 'C' to reset.
  • Split Time: Press '+' to start, press 'C' to split (display shows split time), press 'C' again to un-split (resume main time), press '+' to stop, press 'C' to reset.
  • Two-Finish Times: Press '+' to start. Press 'C' to record the first finisher's time and display it. Press '+' again to stop the second finisher's time. Press 'C' to display the second finisher's time. Press 'C' again to reset.

Technical Specifications

• Accuracy: ±15 seconds per month at normal temperature.
• Current Time Display: Hour, Minute, Second, AM/PM, Year, Month, Day, Day of Week.
• Time Display Format: 12/24-hour format selectable.
• Calendar System: Fully automatic calendar programmed until the year 2079 (Modules 437/438) or 2099 (Module 3208).
• Calculator: 8-digit display (7 digits for negative numbers). Performs 4 basic operations (+, -, ×, ÷), sequential and mixed operations, calculations with constants, and power calculations.
• Stopwatch:
  • Unit of Measurement: 1/100 second.
  • Measuring Capacity: 23 hours 59 minutes 59.99 seconds.
  • Measurement Modes: Elapsed time, split time, two-finish times.
• Other Functions: Dual time, alarm, hourly chime.
• Power Supply:
  • Modules 437/3208: One lithium battery (CR2016). Approximate battery life: 5 years (assuming 20 seconds of alarm use per day and 1 hour of calculator use per day).
  • Module 438: One lithium battery (CR1616). Approximate battery life: 3 years (assuming 20 seconds of alarm use per day and 1 hour of calculator use per day).

Product Information

• Product Name: Electronic / Electro-mechanical Quartz Wristwatch (Men's/Women's)
• 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", Butyrskaya St., 77, Moscow, 127015, Russia
• Warranty Period: 1 year
• Authorized Service Address for Claims: As indicated on the warranty card.