Introduction
Thank you for choosing the Timex TW4B31300 Expedition Field Watch. This manual provides essential instructions for setting up, operating, and maintaining your watch. Designed for durability and functionality, this timepiece features a precise quartz movement, a date function, and the signature INDIGLO night-light for visibility in low-light conditions. It is also water-resistant to 50 meters.

This image displays the Timex TW4B31300 Expedition Field watch, featuring a round black dial with white hour markers and hands, a silver-tone case, and a matching silver expansion band. The watch includes a date window at the 3 o'clock position.
Setup
1. Setting the Time
- Pull the crown (the small knob on the side of the watch) out to position 2.
- Rotate the crown in either direction until the correct time is displayed.
- Push the crown back into position 1 to start the watch.
2. Setting the Date
- Pull the crown out to position 1 (halfway out).
- Rotate the crown clockwise until the correct date is displayed.
- Push the crown back into its original position to engage the watch movement.
3. Battery Activation
Your Timex watch comes with a pre-installed nonstandard battery. If the watch is not running, ensure the crown is fully pushed in. No initial battery activation steps are typically required for new watches.
Operating the Watch
1. Reading the Time and Date
The watch features a 3-hand analog display for hours, minutes, and seconds, along with a date window. Read the time by observing the position of the hour and minute hands relative to the dial markers. The date is displayed in the small window, typically at the 3 o'clock position.
2. Using INDIGLO Night-Light
To activate the INDIGLO night-light, simply press and hold the crown. The entire dial will illuminate for easy reading in the dark. Release the crown to turn off the light.
3. Water Resistance
This watch is water-resistant to 50 meters (164 feet). This rating means it is suitable for short periods of recreational swimming, but not for diving or snorkeling. Do not operate the crown while the watch is wet or submerged.
Maintenance
1. Battery Replacement
The watch uses a nonstandard battery. When the battery needs replacement, the watch may stop or the INDIGLO feature may dim. It is recommended to have the battery replaced by a qualified jeweler or watch repair service to ensure proper sealing and maintain water resistance.
2. Cleaning Your Watch
To clean your watch, wipe the case and crystal with a soft, damp cloth. For the stainless steel expansion band, a mild soap solution and a soft brush can be used, followed by rinsing with clean water and thorough drying. Avoid using harsh chemicals or abrasive materials.
3. Storage
When not wearing your watch, store it in a cool, dry place away from direct sunlight and extreme temperatures. Keeping it in its original packaging or a watch box can help protect it from dust and scratches.

The watch comes packaged in a red box featuring the Timex logo prominently displayed in white on the top and front surfaces. The box is designed to protect the watch during transit and storage.
Troubleshooting
- Watch Not Running: Ensure the crown is fully pushed into position. If the watch still does not run, the battery may need replacement.
- INDIGLO Night-Light Not Working: A dim or non-functional INDIGLO light often indicates a low battery. Replace the battery.
- Inaccurate Time: Check if the crown is fully pushed in. Exposure to strong magnetic fields can also affect timekeeping. If issues persist after battery replacement, professional service may be required.
- Water Inside Watch: If moisture appears inside the watch, have it serviced immediately to prevent damage to the movement.
Specifications
| Feature | Detail |
|---|---|
| Model Number | TW4B31300 |
| Movement Type | Precise Quartz Movement |
| Case Material | Brass |
| Case Diameter | 40 mm |
| Case Thickness | 9 mm |
| Crystal Material | Mineral |
| Band Type | Stainless Steel Expansion Band |
| Water Resistance | 50 meters (164 feet) |
| Night-Light | INDIGLO |
| Battery | 1 Nonstandard Battery (included) |
| Item Weight | 4 ounces |
Warranty and Support
Your Timex watch is covered by a manufacturer's warranty. Please refer to the warranty card included with your purchase for specific terms and conditions. For technical support, service, or warranty claims, please visit the official Timex website or contact their customer service department. Keep your proof of purchase for warranty validation.







