Casio AMW-320 AQ-426 Watch User Manual

Important Information

Battery

The battery initially installed in the watch is for initial testing and may discharge during transport and storage. When the first signs of low power appear (faint display), the battery should be replaced by an authorized CASIO dealer or distributor.

Water Resistance

Watches are classified by water resistance rating (from I to V) according to their ability to withstand water. Refer to the table below to determine the appropriate use of your watch.

Notes:
I: Watches are not protected from water.
II: Do not pull out the crown while the watch is wet.
III: Do not press buttons or pull out the crown while underwater. If the watch is exposed to saltwater, rinse it thoroughly and dry it.
IV: Buttons can be pressed once underwater without re-pressing. Do not pull out the crown underwater. If exposed to saltwater, rinse and dry.
V: Suitable for scuba diving (excluding depths requiring helium-oxygen gas mixtures). Do not pull out the crown underwater.
Some water-resistant watches have leather bands. Do not wear these models while swimming or engaging in activities where the band may be submerged in water.

Watch Care

• Never attempt to open the case or remove the case back.
• The gasket protecting the watch from water and dust should be replaced every 2-3 years.
• If moisture enters the watch, have it checked immediately by an authorized CASIO dealer or distributor.
• Avoid exposing the watch to extreme temperatures.
• While designed for normal use, avoid rough handling and dropping the watch.
• Do not fasten the band too tightly; a finger should fit between your wrist and the band.
• To clean the watch and band, use a dry, soft cloth or a soft cloth dampened with a mild solution of water and neutral detergent. Never use volatile solvents (e.g., benzine, thinners, spray cleaners).
• Store the watch in a dry place when not in use.
• Avoid contact with benzine, cleaning solvents, spray aerosols, adhesives, paints, etc. Chemical reactions can damage gaskets, cases, and polish.
• Some models have silk-screened images on the band. Clean these bands carefully to avoid damaging the designs.

For Watches with Resin Bands

• A whitish powdery substance may appear on the band. This is harmless and can be wiped off with a cloth.
• Exposure to sweat or moisture, or storage in high humidity, can damage or crack the resin band. To ensure long life, wipe the band with a soft cloth after exposure to dirt and water.

Watch Dial

The procedures for operating these combination analog-digital watches are identical for modules N305, 307, 309, 314, 315, 358, 364, 388, and 739. The diagrams in this manual are based on the watch shown in Figure 1.

Figure 1: Watch Dial Layout

Diagram shows a watch face with:

• Outer rotating bezel (elapsed time bezel).
• Analog hands: Hour hand, Minute hand, Second hand.
• Digital display area.
• Module number (e.g., Module 364) indicated.

The elapsed time bezel can be used to track elapsed time. Align the bezel's minute marker with the minute hand. As the minute hand moves, the bezel indicates the elapsed time.

Setting Current Time (Digital Display)

This section describes setting the time on the digital display using buttons A and B.

Button Operations:

• Button A: Used to advance values, switch between 12/24 hour format.
• Button B: Used to enter setting mode, move between digits to be set, and confirm settings.
• Crown (Колесико): Used for analog time setting.

Procedure:

1. Press and hold Button B in the current time mode to enter setting mode. The seconds digits will flash.
2. Press Button B to move to the next digit to be set (hours, minutes). Digits will flash.
3. Press Button A to increase the flashing digit's value. Holding Button A allows for rapid adjustment.
4. Press Button B to cycle through Hour, Minute, Second, Month, Day, Day of Week settings.
5. Press Button A to advance the selected digit.
6. To switch between 12-hour and 24-hour format, press Button A when the hour digits are flashing.
7. Press Button B to exit setting mode and confirm all settings.

Auto-Return Function: If no button is pressed for a few minutes, the watch will automatically return to the current time display.

Setting Current Time (Analog Display)

Follow these steps to set the analog hands:

1. Pull out the crown (Колесико) when the second hand reaches the 12 o'clock position.
2. Turn the crown to set the hour and minute hands.
3. Push the crown back in when the time matches the desired setting.

Minor adjustments (within one second) may occur due to the watch's construction.

Setting Calendar

This section describes setting the date and day of the week.

Button Operations:

• Button A: Used to advance values.
• Button B: Used to enter calendar mode, move between digits to be set, and confirm settings.

Procedure:

1. Press and hold Button B in the current time mode until the calendar mode is entered and the digits for setting begin to flash.
2. Press Button B to cycle through the digits to be set (Month, Day, Day of Week).
3. Press Button A to increase the flashing digit's value. Holding Button A allows for rapid adjustment.
4. Press Button B to exit setting mode and confirm all settings.

Day of Week Abbreviations: SU (Sunday), MO (Monday), TU (Tuesday), WE (Wednesday), TH (Thursday), FR (Friday), SA (Saturday).

The watch features an auto-calendar that automatically adjusts for months, including leap years (up to February 28th).

Setting Daily Alarms

This section describes setting the daily alarm and hourly chime.

Button Operations:

• Button A: Used to advance values, enable/disable alarm/hourly chime.
• Button B: Used to enter alarm setting mode, move between digits to be set, and confirm settings.

Procedure:

1. Press and hold Button B in the current time mode until the alarm setting screen appears and the hour digits flash.
2. Press Button B to switch between setting the alarm hour and alarm minute.
3. Press Button A to increase the flashing digit's value. Holding Button A allows for rapid adjustment.
4. Press Button A again to cycle through alarm on, hourly chime on, or both on/off. The display will show corresponding indicators.
5. Press Button B to exit setting mode and confirm all settings.

If the watch is set to 24-hour format, the alarm time will also be displayed in 24-hour format.

The alarm sounds for approximately 20 seconds each day at the set time. Pressing Button B will stop the alarm.

If the hourly chime is set, the watch will chime at the top of each hour.

Dual Time Setting

This section describes setting a second time zone.

Button Operations:

• Button A: Used to advance values, switch between 12/24 hour format.
• Button B: Used to enter dual time mode, move between digits to be set, and confirm settings.

Procedure:

1. Press Button B repeatedly until the Dual Time mode is displayed.
2. Press and hold Button B to enter setting mode. The hour digits will flash.
3. Press Button B to move to the minute digits.
4. Press Button A to increase the flashing digit's value. Holding Button A allows for rapid adjustment.
5. Press Button A when the hour digits are flashing to switch between 12-hour and 24-hour format.
6. Press Button B to exit setting mode and confirm all settings.

Auto-Return Function: If no button is pressed for a few minutes, the watch will automatically return to the current time display.

Stopwatch Operations

The stopwatch measures elapsed time.

Button Operations:

• Button B: Used to start, stop, and reset the stopwatch.

Procedure:

1. Press Button B to start the stopwatch.
2. Press Button B again to stop the stopwatch.
3. Press and hold Button B to reset the stopwatch to zero.

Operation of starting and stopping the stopwatch is confirmed by a beep.

Measurement Range:

• For modules 305, 307, 309, 314, 315, 358: 59 minutes 59.9 seconds.
• For modules 364, 388, 739: 59 minutes 59.99 seconds.

If the measurement exceeds the maximum range, the stopwatch will reset and restart automatically.

Technical Specifications

• Accuracy: ±15 seconds per month at normal temperature.
• Current Time Mode:
  • Analog Display: Hour, minute, and second hands.
  • Digital Display: Hour, minute, second, PM indicator, month, day, day of week.
  • Display Format: Switchable between 12-hour and 24-hour formats.
  • Calendar: Auto-calendar set for 28 days in February.
• Stopwatch:
  • Maximum Measurement: 59 minutes 59.9 seconds (Modules 305, 307, 309, 314, 315, 358) / 59 minutes 59.99 seconds (Modules 364, 388, 739).
  • Unit of Measurement: 0.1 second (Modules 305, 307, 309, 314, 315, 358) / 0.01 second (Modules 364, 388, 739).
  • Measurement Modes: Elapsed time, Split time.
• Alarm: Daily alarm.
• Hourly Chime: Yes.
• Dual Time: Yes.
• Battery:

  Module Number	Battery Type	Approx. Battery Life*
  305	N 396	Approx. 15 months
  307, 314, 315, 364, 388, 739	N 370/SR920W	Approx. 2 years
  309	N 392/SR1120W	Approx. 2 years
  358	SR927W	Approx. 2 years

  * Based on 20 seconds of alarm operation per day.

  NOTE: It is impossible to damage the watch or its components by pressing buttons incorrectly. If unusual information appears on the display, it means the button press sequence was incorrect. Please reread this manual and try again.

Product Information

Name: Electronic / Electro-mechanical Quartz Wristwatches (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", 127055, Moscow, Suchevskaya St., Bldg. 27, Str. 1, Russia

Country of Origin: Japan

Warranty Period: 1 year

Authorized Service Organization for Claims: As indicated on the warranty card.

Product Compliance: Conforms to GOST 26270-98 (cl.4.35)

Certificate of Conformity No.: РОСС ЈР. АЯ 46.Д00003