Safety Precautions

(1) Water Resistance

* It is recommended to use the watch carefully, following the operating instructions above. Before use, check for water resistance markings on the dial or case back.

Detailed Water Resistance Explanations

1. Watches with everyday water resistance 30M (3 bar) can be used for washing hands, etc., but not for immersion in water.
2. Watches with enhanced everyday water resistance Class I (50M/5 bar) can be used for swimming, etc., but not for diving or skin diving.
3. Watches with enhanced everyday water resistance Class II (100M or 200M/10 or 20 bar) can be used for diving or skin diving, but not for diving with scuba or helium-assisted diving.

(2) Shock Resistance

1. Remove the watch during strenuous sports, although sports like golf will not negatively affect the watch's condition.
2. Avoid strong impacts, such as dropping the watch on the floor.

(3) Magnetic Field Exposure

1. Do not expose the watch to strong magnetic fields for extended periods, as internal components may become magnetized, leading to malfunction. Exercise caution.
2. Under magnetic field exposure, the watch may temporarily run fast or slow. Accuracy will be restored when the magnetic field is removed. In such cases, reset the time.

(4) Vibration

The watch may lose accuracy if subjected to strong vibrations, such as those caused by riding a motorcycle, using a jackhammer, chainsaw, etc.

(5) Temperature

The watch may run incorrectly or stop at temperatures below or above the normal range (5°C – 35°C).

(6) Chemical Substances, Gases, etc.

Exercise maximum caution when in contact with gases, mercury, chemical substances (paint thinner, gasoline, various solvents, cleaning agents containing such substances, adhesives, paints, medicines, perfumes, cosmetics, etc.). These substances may change the color of the watch case, bracelet/strap, and dial. Color changes, deformation, and damage to polymer components are also possible.

⚠️ WARNING

Do not give bracelet pins, clasps, or other small parts to children. If a small part is swallowed, seek medical attention immediately.

❗ ATTENTION

If a rash or irritation appears on the skin after contact with the bracelet, stop wearing the watch and seek medical attention immediately.

(9) Luminescent Coating

The hands and hour markers have a luminescent coating. It is made of safe, non-radioactive paint that absorbs sunlight and artificial light and emits it in the dark. As it emits stored light, the coating gradually becomes dimmer. The amount of emitted light and duration of glow depend on various factors: glass shape, paint layer thickness, ambient brightness, distance from the light source, and light absorption. Remember that if little light is absorbed, the watch will glow faintly or for a short time.

(10) Water-Resistant Strap

Some models use leather and nylon straps that have been specially treated for protection against sweat and water. The water-resistant property of this strap may be lost depending on the period and conditions of use.

Finding Your Caliber Number

Check your watch's caliber number using the watch model number or case code on the back of the watch case.

1. Finding by 10-digit Model Number

Check the 10-digit model number on the warranty card included with the watch. You can also find the number on the product label attached to the watch. The second and third digits of the number indicate your watch's caliber number.

Example: If the model number is "CUB8A002B0", the caliber number is "UB".

2. Finding by Case Code

Find the case code on the back of your watch case.

A: If the case code is six digits, the first two digits correspond to the caliber number.

B: If the case code is 8 or 9 digits, the first three digits correspond to the movement number. A table of caliber and movement number correspondences is provided below.

Example A: If the case code is "UB8A-Q0", the caliber number is "UB".

Example B: If the case code is "HM50A7B-4", the movement number is "HM5". The corresponding caliber number in the table is "UB".

* Depending on the watch's characteristics, the case code location may vary, its characters may be small, and they may be difficult to distinguish.

* Diagrams and illustrations in this manual may differ from the actual appearance of your watch, but the functions and operating procedures remain unchanged.

Technical Specifications

(1) Quartz frequency: 32,768 Hz (frequency per second)

(2) Drive mechanism: Stepping motor

Models with Two Hands

Models with Three Hands

* When worn on the wrist at ambient temperatures between 5°C and 35°C.

Technical specifications are subject to change without prior notice due to product modernization.

Component Names and Functions

A: Hour Hand

B: Minute Hand

C: Second Hand

D: Crown

E: Dial

Two-Hand Model

Diagram showing a two-hand watch face with labels A (Hour Hand) and B (Minute Hand) pointing to the respective hands, and D (Crown) pointing to the side of the watch case.

Three-Hand Model

Diagram showing a three-hand watch face with labels A (Hour Hand), B (Minute Hand), C (Second Hand) pointing to the respective hands, D (Crown) pointing to the side of the watch case, and E (Dial) indicating the watch face.

* The position of the crown may differ on some models.

Models with Screw-Lock Crown

On some models, you cannot pull out the crown without unscrewing it (models with a screw-lock crown).

For operating this type of watch:

1. Before setting the time, turn the crown counter-clockwise to unlock the screw.
2. After setting the time, push the crown in and turn it clockwise until it locks.

Setting the Time

1. When the second hand reaches the 0-second position (12 o'clock), pull out the crown. The second hand will stop.
2. * If the watch has only two hands, the crown can be pulled out at any time as there is no second hand.
3. By turning the crown, set the time. To set the time accurately, set the minute hand 4-5 minutes past the desired time, then move it back to the correct position.
4. Push the crown in to return it to its original (unlocked) position.

Diagram showing the crown being pulled out, turned counter-clockwise, and then pushed back in.

Using the Rotating Indicator Ring (Bezel)

Note that some models are equipped with a rotating indicator ring that should be used properly. Rotate the ring so that the mark aligns with the minute hand. As a specific time passes, you can measure elapsed time by the distance between the minute hand and the numbers on the rotating indicator ring. You can also set the mark to a desired time to remind yourself of the remaining time until a scheduled event.

Diagram showing a watch with a rotating bezel. An arrow indicates rotating the bezel to align a mark with the minute hand. Another part of the diagram shows measuring elapsed time using the bezel and minute hand.

The ring cannot be rotated in the opposite direction because it is equipped with a safety mechanism designed to prevent accidental operation due to force or impact. The numbers on the rotating ring can also simplify reading the current time.

* Depending on the design, the reverse rotation lock and 1-minute click may not be present on some models.