CASIO Module No.

Water Resistance

For all categories of watches, the following are prohibited:

• Pressing buttons underwater.
• Changing hands underwater.
• Unscrewing the crown underwater.

If the watch is exposed to saltwater, rinse it thoroughly and dry it. Do not wear a watch with a leather strap while swimming. Avoid prolonged contact of the leather strap with water.

Watches are classified by water resistance levels (from I to V) according to their degree of water protection. Refer to the table below to determine the correct usage for your watch.

Water Resistance Table

Notes on Water Resistance

• I: Watches are not water-resistant. Avoid exposure to any moisture.
• II: WR (Water Resistant) means the model is waterproof according to ISO 2281. Brief contact with water will not cause any problems.
• III: Watches with 5 Bar (50 meters) water resistance can withstand the indicated water pressure and can be used during showers and brief swimming.
• IV: Water resistance of 10 Bar (100 meters) means the watch can be used during normal swimming and snorkeling.
• V: Water resistance of 20 Bar (200 meters) means the watch can be used for scuba diving (excluding depths requiring helium-oxygen mixtures).

Condensation and Disclaimer

When using the product in conditions of rapid temperature changes, slight condensation may form on the inside of the glass. This phenomenon is due to the laws of physics and is not a defect.

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

Screw-Lock Crown

Some water-resistant models are equipped with a screw-lock crown.

To pull out such a crown, you must first unlock it by turning it in the direction indicated in the illustration. Do not apply excessive force when pulling out the crown, as this may cause damage.

Illustration Description: A watch face showing a crown. An arrow indicates the direction to turn the crown to unlock it. The crown is labeled as 'Crown'.

Note that the watch becomes unprotected from water and moisture when the crown is pulled out. After completing any operations using the crown, be sure to return it to its original position and lock it.

Setting the Current Time

MODULES 1362, 1398, 1770, 2799, 3378, 4370

Pull out the crown. Rotate it to set the hands to the current time. Push the crown back to its original position.

Illustration Description: A watch face with hands and a crown labeled 'Crown'.

MODULES 705, 706, 1300, 1311, 1330, 1344, 1360, 1399, 1747, 1771, 1782, 4328, 4394, 4747, 5049, 5284, 5361, 5364, 5375, 5577

1. When the second hand is at the 12 o'clock position, pull out the crown. The second hand will stop.
2. Rotate the crown to set the hands to the current time. Set the minute hand 4-5 minutes ahead of the current time, then move it back.
3. Push the crown back to its original position to resume timekeeping.

Illustration Description: Two watch faces showing crown positions. One displays '30' in a date window. Labels indicate 'Crown', 'First click: Date setting', 'Second click: Time setting'. Module numbers 5284, 5361, 5364, 5375, 5577 are listed.

MODULES 707, 708, 1331, 1332, 1335, 1336, 1342, 1345, 1346, 1369, 1370, 1373, 1701, 1710, 1711, 1787, 2717, 2718, 2719, 2725, 2731, 2748, 2749, 2783, 2784, 3363, 3711, 3712, 4393, 5025, 5044, 5058, 5116, 5128, 5180, 5199, 5206, 5207, 5218, 5250, 5340, 5341, 5342, 5343, 5352, 5358, 5383, 5393, 5436, 5507, 5532

1. When the second hand is at the 12 o'clock position, pull out the crown. The second hand will stop.
2. Rotate the crown to set the hands to the current time. For more precise setting, move the minute hand 4-5 minutes back from the desired time, then move it forward to the correct time.
3. Push the crown back to its original position to resume timekeeping.

Illustration Description: A watch face showing a crown, date window with '30', and indicators for crown positions. Labels: 'Crown (normal position)', 'First click: Date setting', 'Second click: Time setting'.

MODULES 709, 1309, 1333, 1334, 1347, 3716, 5125, 5167, 5223, 5237, 5249, 5339, 5373, 5458, 5474

Setting the Current Time

1. When the second hand is at the 12 o'clock position, pull out the crown. The second hand will stop.
2. Rotate the crown to set the hands to the current time. For more precise setting, move the minute hand 4-5 minutes back from the desired time, then move it forward to the correct time.
3. Push the crown back to its original position to resume timekeeping.

Illustration Description: Two watch faces showing crown positions and date/day displays (e.g., 'SUN 30', 'WED 30'). Labels indicate 'Crown (normal position)', 'First click: Date and Day setting', 'Second click: Time setting'. Module numbers 709, 1333, 1347, 3716 are listed.

Watches with Backlight

Press and hold the 'L' button to activate the watch backlight.

Depending on the watch model, the backlight duration is 2 to 3 seconds, or 1 second, or until the 'L' button is pressed (Module 5577).

Depending on the watch model, the backlight is provided by electro-luminescent (EL) elements or by LEDs. EL elements may lose brightness after prolonged use.

Frequent use of the backlight shortens battery life.

Activating the backlight for an extended period or when the battery charge is low may cause the watch hands to stop moving for some time.

Illustration Description: Two watch faces showing the 'L' button labeled 'L (Backlight button)' and the crown labeled 'Crown' or 'Crown'.

Watches with Rotating Bezel

Rotate the bezel to align the marker with the minute hand. After some time, you can tell how much time has passed since you aligned the marker with the minute hand.

Illustration Description: A watch face with a rotating bezel, showing markings for time measurement. Label: 'Bezel for measuring elapsed time'.

Technical Specifications

Technical specifications are subject to change without prior notice.

Product Information