Introduction
This manual provides instructions for the proper use and care of your Luminox Pacific Diver Chronograph XS.3143 watch. Please read this manual thoroughly to ensure correct operation and to maintain the watch's performance and longevity.

This image shows the front view of the Luminox Pacific Diver Chronograph XS.3143 watch, highlighting its illuminated hour markers and hands for visibility in low light conditions.
Setup
Crown Positions
The crown on your watch has multiple positions for setting various functions:
- Position 0 (Pushed In): Normal operating position.
- Position 1 (Pulled Out One Click): Used for setting the date.
- Position 2 (Pulled Out Two Clicks): Used for setting the time.

A side profile of the watch, illustrating the textured crown for time and date adjustments, and the two pushers for operating the chronograph functions.
Setting the Time
- Pull the crown out to Position 2. The second hand will stop.
- Rotate the crown to move the hour and minute hands to the desired time. Ensure AM/PM is correctly set if your watch has a 24-hour indicator or if the date changes at midnight.
- Push the crown back into Position 0 to start the watch.
Setting the Date
- Pull the crown out to Position 1.
- Rotate the crown to adjust the date. Avoid setting the date between 9 PM and 3 AM, as this can interfere with the automatic date change mechanism.
- Push the crown back into Position 0.
Setting the Chronograph to Zero
If the chronograph hands are not at their zero positions (12 o'clock for the central second hand, 12 or 0 for sub-dials) after a reset, they can be adjusted:
- Pull the crown out to Position 2.
- Press the upper pusher (A) to adjust the central chronograph second hand.
- Press the lower pusher (B) to adjust the chronograph minute or hour sub-dial hands.
- Once all hands are at their zero positions, push the crown back into Position 0.
Operating the Watch
Using the Chronograph Function
The chronograph allows for precise measurement of elapsed time.
- Start: Press the upper pusher (A) to start the chronograph. The central chronograph second hand will begin to move.
- Stop: Press the upper pusher (A) again to stop the chronograph. Read the elapsed time from the central second hand and the sub-dials.
- Reset: After stopping, press the lower pusher (B) to reset all chronograph hands to their zero positions.
Using the Unidirectional Rotating Bezel
The bezel rotates in one direction only, preventing accidental shortening of measured time. It is useful for timing events, such as dive times.
- Rotate the bezel counter-clockwise until the zero marker aligns with the minute hand.
- The minute hand will then indicate the elapsed time on the bezel's scale.

This angled view displays the watch's black dial with sub-dials, the date window, and the rotating unidirectional bezel with minute markers.
Maintenance
Cleaning Your Watch
Regular cleaning helps maintain the appearance and function of your watch. Use a soft, damp cloth to wipe the case and strap. For metal bracelets, a soft brush with mild soapy water can be used, followed by thorough rinsing and drying. Ensure the crown is fully pushed in before cleaning with water.
Water Resistance
Your Luminox Pacific Diver Chronograph XS.3143 watch is water resistant to 100 meters (10 ATM). This rating makes it suitable for swimming, snorkeling, and recreational diving. However, it is crucial to ensure the crown is fully pushed in before any contact with water. Do not operate the crown or pushers while the watch is submerged or wet, as this can compromise the water resistance.
Battery Replacement
The watch is powered by a quartz movement requiring a battery. When the battery is low, the second hand may jump in two-second intervals (End-of-Life indicator). Battery replacement should be performed by an authorized Luminox service center to ensure proper sealing and maintain water resistance.

The back of the watch, featuring the stainless steel case back with engraved details such as water resistance rating and model information.
Troubleshooting
- Watch Not Running: Check if the crown is fully pushed in. If the watch still does not run, the battery may need replacement.
- Date Not Changing: Ensure the time is set correctly, especially the AM/PM cycle. If the date changes at noon, adjust the time by 12 hours.
- Chronograph Hands Not Resetting to Zero: Follow the 'Setting the Chronograph to Zero' instructions in the Setup section.
- Water Inside Watch: If condensation or water appears inside the watch, immediately take it to an authorized service center.
Specifications
| Feature | Specification |
|---|---|
| Model Number | XS.3143 |
| Case Diameter | 44 Millimeters |
| Case Thickness | 12 Millimeters |
| Band Width | 24 Millimeters |
| Case Material | Stainless Steel |
| Band Material | Rubber |
| Crystal Type | Sapphire Crystal |
| Movement Type | Quartz |
| Display Type | Analog Chronograph |
| Water Resistance Depth | 100 Meters (10 ATM) |
| Clasp Type | Buckle |
| Power Source | Battery Powered |

A complete front view of the Luminox Pacific Diver Chronograph XS.3143, showcasing its blue rubber strap and overall design.
Warranty Information
Luminox watches are manufactured to high-quality standards and come with a limited warranty against manufacturing defects. The specific terms and duration of the warranty may vary by region. Please refer to the warranty card included with your purchase or visit the official Luminox website for detailed warranty information.
Support & Contact
For further assistance, service, or to inquire about replacement parts, please contact an authorized Luminox dealer or visit the official Luminox website. You can find contact information and a list of service centers on their website.
Official Luminox Website: www.luminox.com