Introduction
The Spinnaker Dumas GMT SP-5119 is an automatic watch designed for men, featuring a robust 43mm solid stainless steel bracelet. This timepiece is equipped with a reliable automatic movement and a GMT function, making it ideal for travelers and watch enthusiasts alike. Its design combines high-quality sports watch mechanics with the distinctive style synonymous with the Spinnaker brand.

Figure 1: Spinnaker Dumas GMT SP-5119 watch with its stainless steel bracelet and an accompanying blue rubber strap, highlighting its versatility.
Setup and Initial Use
Your Spinnaker Dumas GMT watch is powered by an automatic movement, which means it winds itself with the motion of your wrist. For initial setup or after a period of inactivity, manual winding may be required.
Winding the Watch
- Ensure the crown is in position 0 (fully pushed in).
- Turn the crown clockwise approximately 30-40 times. This will provide enough power reserve to start the watch.
- Once the second hand begins to move, the watch is running.
Setting the Time and Date
- Setting the Date: Pull the crown out to position 1. Turn the crown counter-clockwise to adjust the date. Avoid setting the date between 9 PM and 3 AM, as this can damage the movement.
- Setting the GMT Hand: In position 1, turn the crown clockwise to adjust the GMT hand (24-hour hand). This hand can be set to a second time zone.
- Setting the Time: Pull the crown out to position 2. Turn the crown to set the hour and minute hands. Ensure the AM/PM is correctly set for the date change. Push the crown back to position 0 when finished.

Figure 2: Detailed view of the watch dial and crown, illustrating the setting mechanism.
Operating the GMT Function
The GMT function allows you to track a second time zone using the 24-hour hand and the rotating bezel. This is particularly useful for travelers or those who communicate across different time zones.
Using the GMT Hand and Bezel
- The 24-hour hand (GMT hand) completes one rotation every 24 hours.
- To set the GMT hand, pull the crown to position 1 and rotate it clockwise until the GMT hand points to the desired hour on the 24-hour scale of the inner dial.
- The bi-directional rotating bezel can be used to track a third time zone. Align the 24-hour mark on the bezel with the current time in your primary time zone (as indicated by the GMT hand). Then, rotate the bezel to align with the offset of your third time zone.

Figure 3: Close-up of the watch dial, highlighting the GMT hand and 24-hour markings for multi-timezone tracking.
Maintenance and Care
Proper care will ensure the longevity and performance of your Spinnaker Dumas GMT watch.
Water Resistance
The Spinnaker Dumas GMT watch has a water resistance rating of 30 ATM (300 meters / 1000 feet). This makes it suitable for professional marine activity and serious surface water sports, but not for saturation diving.
- Always ensure the crown is fully screwed down before exposing the watch to water.
- Do not operate the crown or pushers (if any) while the watch is submerged in water.
- After exposure to saltwater, rinse the watch with fresh water and dry it with a soft cloth.
Cleaning and Storage
- Clean the watch case and bracelet regularly with a soft, damp cloth. For stubborn dirt, a mild soap solution can be used.
- Avoid using harsh chemicals or abrasive materials, as these can damage the finish.
- When not wearing the watch for extended periods, store it in a cool, dry place, away from direct sunlight and strong magnetic fields.

Figure 4: The transparent case back reveals the intricate automatic movement, a testament to the watch's craftsmanship.
Troubleshooting
If you encounter any issues with your Spinnaker Dumas GMT watch, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Watch stops or runs intermittently. | Insufficient power reserve. | Manually wind the watch by turning the crown clockwise 30-40 times. Wear the watch regularly to keep it wound. |
| Date changes at noon instead of midnight. | AM/PM setting is incorrect. | Advance the time by 12 hours. |
| Condensation under the crystal. | Temperature change or moisture ingress. | If minor, it may dissipate. If persistent or severe, seek professional service immediately to prevent damage. |
| GMT hand not aligning correctly. | Incorrect setting. | Refer to the "Setting the Time and Date" section to re-adjust the GMT hand. |
If the problem persists after attempting these solutions, please contact Spinnaker customer support or an authorized service center.
Specifications
- Model Number: SP-5119-22
- Movement: Japanese TMI NH34 GMT Automatic (3 hands with date and GMT display)
- Case Material: 316L Stainless Steel
- Case Diameter: 44mm
- Crystal: Flat Sapphire with Anti-Reflective Coating
- Water Resistance: 30 ATM (300 meters / 1000 feet)
- Bracelet: Solid Stainless Steel Hexad Bracelet
- Additional Strap: Matching Rubber Strap included
- Lume: Super-LumiNova on hands and markers

Figure 5: The watch's luminous elements provide excellent readability in low-light conditions.
Warranty and Support
Your Spinnaker watch is covered by an international warranty against manufacturing defects.
- Warranty Period: Twenty-four (24) months from the date of purchase.
- This warranty covers manufacturing defects in materials and workmanship.
- It does not cover normal wear and tear, damage caused by improper handling, lack of care, accidents, or unauthorized repairs.
- For warranty claims or service inquiries, please contact Spinnaker customer support or visit their official website for authorized service centers.
For further assistance, please visit the official Spinnaker website or contact their customer service department.