Introduction
This manual provides instructions for the Timex Men's TW4B08100 Expedition Acadia watch. This rugged and reliable timepiece is designed for outdoor use, featuring a durable resin case, a comfortable leather/nylon strap, and a 50-meter water resistance rating. Key features include a date window and the Indiglo night-light for visibility in low-light conditions.

Image: Front view of the Timex Expedition Acadia watch, showcasing the black dial, white numerals, and black leather/nylon strap.
Setup
Setting the Time
- Pull the crown out to the furthest position (position 3).
- Rotate the crown in either direction to move the hour and minute hands until the correct time is displayed.
- Push the crown back in to its original position (position 1) to start the watch.
Setting the Date
- Pull the crown out to the middle position (position 2).
- Rotate the crown clockwise or counter-clockwise (depending on the movement) until the correct date appears in the date window.
- Push the crown back in to its original position (position 1).

Image: Side view of the watch, highlighting the crown used for time and date adjustments.
Operating Instructions
Indiglo Night-Light
To activate the Indiglo night-light, press and hold the crown in. The entire dial will illuminate for easy reading in low-light conditions. Release the crown to turn off the light.
Water Resistance
This watch is water resistant to 50 meters (165 feet). This means it is suitable for recreational swimming in shallow water. It is not suitable for diving or snorkeling. To maintain water resistance, ensure the crown is fully pushed in before any contact with water. Do not operate the crown while the watch is wet or submerged.
Video: An overview of the Timex Expedition watch series, including features like Indiglo backlight, quick-date, and 50-meter water resistance. This video is provided by Timex Corporation.
Maintenance
Battery Replacement
The watch uses one Lithium Metal battery (CR2016). When the watch stops running, the battery needs replacement. It is recommended to have the battery replaced by a qualified watch technician to ensure proper sealing and maintain water resistance.
Cleaning
- For the watch case, wipe with a soft, damp cloth. Avoid harsh chemicals.
- For the leather/nylon strap, clean with a mild soap solution and a soft brush, then rinse thoroughly and allow to air dry completely. Avoid prolonged exposure to direct sunlight or extreme heat.

Image: Close-up view of the watch's black leather and nylon strap with the buckle, illustrating the material and construction.
Troubleshooting
- Watch not running: Ensure the crown is fully pushed in. If it still does not run, the battery may need replacement.
- Indiglo not working: Check if the crown is fully pushed in. If the light does not activate, the battery may be low or depleted.
- Date not changing: Ensure the time is set correctly past midnight for the date to advance. If the date is stuck, try resetting it manually.
For persistent issues, contact Timex customer support or a certified watch repair center.
Specifications
| Model Name | Expedition Acadia |
| Model Number | TW4B08100 |
| Case Material | Resin |
| Strap Material | Fabric (Leather/Nylon) |
| Dial Color | Black |
| Case Diameter | 40 Millimeters |
| Case Thickness | 11.5 Millimeters |
| Band Width | 20 Millimeters |
| Water Resistance Depth | 50 Meters (165 Feet) |
| Movement Type | Quartz |
| Battery Type | 1 Lithium Metal (CR2016) |
| Crystal Material | Acrylic |
| Additional Features | Arabic Numerals, Glow In The Dark (Indiglo), Second Hand, Date Window |
Video: A guide to Timex watch sizing, demonstrating how different case sizes appear on various wrist sizes. This video is provided by Timex Corporation.
Warranty and Support
This Timex watch is covered by a manufacturer's warranty. For detailed warranty information, service, or additional support, please refer to the official Timex website or contact their customer service directly. Keep your purchase receipt as proof of purchase.