1. Introduction and Overview
This manual provides comprehensive instructions for the Timex Women's DGTL Stacked Numbers 28mm Watch, model TW5M29400JT. It covers essential information regarding the watch's setup, operation, maintenance, and troubleshooting. Please read this manual thoroughly to ensure proper use and care of your timepiece.
Key features of this watch include:
- Adjustable 12mm Resin strap
- 24-Hour Chronograph with 1/second resolution
- Countdown Timer
- Daily Alarm
- 24-Hour Military Time Mode
- Day, Date, and Month Calendar
- Indiglo Light-Up Watch Dial
- Water resistance up to 50 meters (165 feet)

Figure 1.1: Front view of the Timex Women's DGTL Stacked Numbers 28mm Watch.
2. Setup
2.1 Initial Power On and Battery
Your watch comes with one Lithium Metal battery pre-installed. The watch should be ready for use upon removal from its packaging. If the display is blank or dim, the battery may need to be activated or replaced. Refer to the 'Maintenance' section for battery replacement information.
2.2 Adjusting the Strap
The watch features an adjustable 12mm resin strap designed to fit wrist circumferences up to 7.5 inches. To adjust, locate the buckle and the series of holes on the strap. Insert the buckle pin into the hole that provides a comfortable and secure fit on your wrist.

Figure 2.1: Watch on wrist demonstrating strap fit.
3. Operating Instructions
Your Timex DGTL watch typically has multiple buttons for operation. While specific button functions may vary slightly, common operations are described below. Refer to the diagram below for general button locations.

Figure 3.1: Side view showing watch buttons.
3.1 Setting Time and Date
- Press the MODE button (often bottom-left) until the time setting mode is displayed (usually indicated by flashing digits).
- Use the SET/ADJUST button (often top-left) to select the digit or setting you wish to change (e.g., hours, minutes, year, month, day).
- Use the START/STOP or LIGHT button (often right-side buttons) to increase or decrease the selected value.
- Once all settings are correct, press the MODE button again to exit the setting mode.
3.2 Using the 24-Hour Chronograph
- Press the MODE button until the chronograph display appears (usually shows '00:00:00').
- Press the START button (often top-right) to begin timing.
- Press the STOP button (often bottom-right) to pause the chronograph. Press again to resume.
- To reset the chronograph, press the RESET button (often the same as STOP when paused, or a dedicated button).
3.3 Setting and Using the Countdown Timer
- Press the MODE button until the countdown timer display appears.
- Use the SET/ADJUST button to set the desired countdown duration.
- Use the START button to begin the countdown.
- An alarm will sound when the timer reaches zero. Press any button to silence it.
3.4 Setting the Daily Alarm
- Press the MODE button until the alarm setting display appears.
- Use the SET/ADJUST button to set the desired alarm time.
- Activate or deactivate the alarm using the designated button (often START/STOP or LIGHT). An alarm icon will typically appear on the display when active.
- When the alarm sounds, press any button to silence it.
3.5 Activating Indiglo Light-Up Dial
To illuminate the watch dial in low-light conditions, press the INDIGLO button (often the top-right button or a dedicated button). The light will remain on for a few seconds.
4. Maintenance
4.1 Water Resistance
This watch is water resistant to 50 meters (165 feet). This rating means it is suitable for short periods of recreational swimming. It is not suitable for diving or snorkeling. Avoid pressing buttons underwater to prevent water ingress.
4.2 Cleaning Your Watch
To clean your watch, wipe it gently with a soft, damp cloth. For the resin strap, mild soap and water can be used. Avoid harsh chemicals or abrasive materials, as these can damage the watch case or strap.
4.3 Battery Replacement
The watch uses one Lithium Metal battery. When the display becomes dim or the watch stops functioning, the battery may need replacement. Battery replacement should ideally be performed by a qualified watch technician to ensure proper sealing and maintain water resistance. Attempting to replace the battery yourself may void the warranty or compromise the watch's water resistance.

Figure 4.1: Watch back for battery access (professional service recommended).
5. Troubleshooting
- Display is blank or dim: The battery may be low or depleted. Replace the battery as described in the 'Maintenance' section.
- Buttons are unresponsive: Ensure the watch is not in a locked mode (if applicable). If the issue persists, a battery reset (by removing and reinserting the battery) or professional service may be required.
- Time is inaccurate: Re-set the time according to section 3.1. If inaccuracy persists, the watch module may require service.
- Water inside the watch: Immediately take the watch to a qualified service center. Do not attempt to dry it yourself, as this can cause further damage.
6. Specifications
| Feature | Specification |
|---|---|
| Model Number | TW5M29400JT |
| Case Diameter | 28 Millimetres |
| Case Thickness | 12 Millimetres |
| Band Width | 12 Millimetres |
| Band Material | Resin |
| Display Type | Digital |
| Movement Type | Quartz |
| Water Resistance Depth | 50 meters (165 feet) |
| Battery Type | 1 Lithium Metal (included) |
| Product Dimensions | 19.05 x 2.79 x 1.19 cm |
| Item Weight | 18.1 g (0.04 Pounds) |
7. Warranty and Support
Your Timex watch is covered by a limited warranty. Please refer to the warranty card included with your purchase for specific terms and conditions, including warranty duration and coverage details. 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.

Figure 7.1: Example of Timex product packaging.




