1. Acabatview
The SEIKO Men's SSK025 5 Sports Field GMT Watch is an automatic timepiece designed for reliability and functionality. It features a GMT function with a distinct red hand, a durable stainless steel case, and a thick, curved glass crystal. The LumiBrite hands and indexes ensure visibility in low-light conditions, and the watch offers water and magnetic resistance for everyday wear.

Figura 1: Frontal view of the SEIKO SSK025 5 Sports Field GMT Watch, showcasing the black dial, luminous markers, and red GMT hand.
2. Configuració
2.1 Donar corda al rellotge
This watch is equipped with an automatic mechanical movement. It is self-winding through the motion of your wrist. If the watch has stopped or its power reserve is low, it can be manually wound by rotating the crown in the normal position (position 0) clockwise approximately 30-40 times. This will provide sufficient power to start the watch and allow the automatic winding mechanism to take over.
2.2 Configuració de l'hora i la data
- Estireu la corona fins a la posició 2 (primer clic). Rotate the crown clockwise or counter-clockwise to set the date.
- Pull the crown out to position 3 (second click). The second hand will stop. Rotate the crown to set the hour and minute hands. To ensure accurate time setting, align the minute hand to a time a few minutes ahead of the current time, then rotate it counter-clockwise to the correct time.
- Empenyeu la corona cap a la posició 0. La maneta dels segons reprendrà el moviment.
2.3 Setting the GMT Hand
The red GMT hand allows you to track a second time zone on the 24-hour scale located on the bezel. To set the GMT hand:
- Set the main time (hour and minute hands) first as described in Section 2.2.
- Estireu la corona fins a la posició 2 (primer clic). Rotate the crown counter-clockwise to adjust the GMT hand to the desired second time zone on the 24-hour scale.
- Empenyeu la corona cap a la posició 0.

Figura 2: Angle view of the SEIKO SSK025, highlighting the crown and case profile.
3. Funcionament del rellotge
3.1 Moviment automàtic
The watch is powered by an automatic mechanical movement. It gains power from the natural motion of your arm while worn. When fully wound, the watch has a power reserve of approximately 41 hours. If the watch is not worn for an extended period, it may stop, requiring manual winding to restart.
3.2 GMT Functionality
The GMT hand, in conjunction with the 24-hour markings on the bezel, allows for simultaneous tracking of two different time zones. The main hour hand indicates the local time, while the red GMT hand indicates the time in a second, user-selected time zone.
3.3 Resistència a l'aigua
The SEIKO SSK025 is water resistant up to 100 meters (10 bar). This rating makes it suitable for everyday use, including showering, swimming, and snorkeling. It is not recommended for scuba diving or high-impact water sports. Always ensure the crown is fully pushed in before any contact with water.
3.4 LumiBrite Illumination
The watch features LumiBrite on its hands and indexes. This luminous material absorbs light energy and emits it in the dark, providing enhanced readability in low-light conditions. The brightness and duration of the glow depend on the amount and intensity of light absorbed.

Figura 3: Frontal view of the SEIKO SSK025, showing the clear dial and markers.
4. Manteniment
4.1 Neteja
To maintain the appearance of your watch, wipe the case and crystal with a soft, dry cloth regularly. For the stainless steel case and bracelet, a slightly damp es pot fer servir un drap, seguit d'un drap sec. Eviteu utilitzar productes químics agressius o materials abrasius.
4.2 Emmagatzematge
When not wearing your watch, store it in a cool, dry place away from direct sunlight and extreme temperatures. To prevent magnetization, keep the watch away from strong magnetic fields, such as those produced by speakers, refrigerators, and certain electronic devices.
4.3 Manteniment periòdic
For optimal performance and longevity, it is recommended to have your watch inspected and serviced by an authorized SEIKO service center every 2-3 years. This includes checking the movement, water resistance, and general condition of the watch.
5. Solució De Problemes
5.1 Watch Not Running or Running Slowly
- Enrotllament insuficient: If the watch has not been worn for a while, manually wind it by rotating the crown clockwise in position 0 for 30-40 turns.
- Manca de moviment: Ensure the watch is worn regularly or placed on a watch winder to maintain its power reserve.
5.2 Incorrect Date/Day Display
- Ajust manual: Adjust the date and day as described in Section 2.2. Avoid adjusting the date between 9:00 PM and 4:00 AM, as this can damage the movement.
5.3 Condensació dins del cristall
- Immediate Service Required: If condensation appears under the crystal, it indicates a breach in water resistance. Seek professional service immediately to prevent further damage to the movement.
6. Especificacions
| Característica | Detall |
|---|---|
| Número de model | SSK025 |
| Moviment | Automatic with Manual Winding |
| Material de la caixa | Acer inoxidable |
| Cristall | Thick, Curved Glass |
| Resistència a l'aigua | 100 metres (10 bar) |
| Material lluminós | LumiBrite on hands and indexes |
| Funcions | GMT Function (Red Hand), Date Display |
| Dimensions del producte | 4.9 x 6.4 x 4 polzades; 7.58 unces |
| Fabricant | Seiko |
| Data de primera disponibilitat | 26 de juny de 2024 |
7. Garantia i Suport
For information regarding your product's warranty, please refer to the warranty card included with your purchase or visit the official SEIKO website. For technical support, repairs, or any other inquiries, please contact an authorized SEIKO service center or your retailer. Keeping your proof of purchase is recommended for warranty claims.





