1. Introduction
This manual provides comprehensive instructions for the operation, maintenance, and care of your TIMEX T100 Sports Watch, Model TW5M58400. This timepiece features a durable resin case, mineral glass, and a precise quartz movement, designed for everyday wear and sports activities. Please read this manual thoroughly to ensure proper use and longevity of your watch.
2. Initial Setup
2.1 Setting Time and Date
Your TIMEX T100 Sports Watch is equipped with a digital display. To set the time and date:
- Press the MODE button repeatedly until the time setting mode is displayed (usually indicated by flashing digits).
- Use the RST/STP button to adjust the flashing digit (hours, minutes, seconds).
- Use the ST/LAP button to move to the next digit or setting (e.g., from hours to minutes).
- Once time is set, continue pressing ST/LAP to cycle through date settings (month, day, year) and adjust using RST/STP.
- Press MODE again to exit the setting mode and return to normal time display.
2.2 Activating the Watch
If your watch is new and the display is off, it may have a plastic tab under the crown or a battery saving mode. Remove any protective tabs. If the display remains off, refer to the Troubleshooting section.
3. Operating Your Watch
3.1 Button Functions
- MODE Button: Cycles through different modes such as Time, Date, Alarm, Stopwatch, and Timer.
- RST/STP Button: Resets or stops functions (e.g., stopwatch reset, alarm off). Also used for adjusting values in setting modes.
- ST/LAP Button: Starts or laps functions (e.g., stopwatch start, lap time recording). Also used for selecting digits/settings in setting modes.
- INDIGLO Button: Activates the INDIGLO night-light for easy viewing in low-light conditions.
3.2 Using the Stopwatch
- Press MODE until the stopwatch mode is displayed.
- Press ST/LAP to start the stopwatch.
- Press ST/LAP again to record a lap time (the stopwatch continues running in the background).
- Press RST/STP to stop the stopwatch.
- Press RST/STP again to reset the stopwatch to zero.
3.3 Using the Alarm
- Press MODE until the alarm mode is displayed.
- Use RST/STP and ST/LAP to set the desired alarm time.
- Activate or deactivate the alarm using the appropriate button (refer to on-screen indicators).
- When the alarm sounds, press any button to silence it.
4. Maintenance and Care
4.1 Cleaning Your Watch
To clean your watch, wipe it with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners, as these can damage the watch's finish or seals. For resin straps, mild soap and water can be used, then rinse thoroughly and dry.
4.2 Water Resistance
Your TIMEX T100 Sports Watch is water-resistant up to 50 meters (WR 50M), as indicated on the watch face. This means it is suitable for short periods of recreational swimming, but not for diving or snorkeling. Do not operate buttons while the watch is submerged.
4.3 Battery Replacement
The watch uses a CR2025 cell battery. Battery life varies depending on usage. When the display dims or functions become erratic, it may be time for a battery replacement. It is recommended to have the battery replaced by a qualified watch technician to ensure proper sealing and water resistance.

Figure 4.1: Rear view of the watch, indicating the CR2025 battery type and 50-meter water resistance.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim. | Low battery. | Replace battery (CR2025). |
| Time is incorrect. | Time not set correctly; accidental button press. | Refer to Section 2.1 to reset time and date. |
| Buttons are unresponsive. | Watch may be in a locked mode; extreme temperature; low battery. | Check manual for specific lock features; allow watch to return to normal temperature; replace battery. |
| Water inside the watch. | Seals compromised; buttons pressed underwater. | Immediately take to a qualified service center. Do not attempt to dry it yourself. |
6. Specifications
- Brand: TIMEX
- Model: T100 Sports
- Item Model Number: TW5M58400
- Target Department: Unisex
- Case Size: 40MM
- Movement: Quartz
- Crystal: Mineral Glass
- Case Material: Resin
- Water Resistance: 50 Meters (WR 50M)
- Battery Type: CR2025 Cell
- Package Dimensions: 10.5 x 7.9 x 7.3 cm
- Item Weight: 30 g
- Date First Available: 23 September 2023
- ASIN: B0CJ4FYYXW

Figure 6.1: Front view of the TIMEX T100 Sports Watch.

Figure 6.2: Side view of the TIMEX T100 Sports Watch, highlighting the control buttons.
7. Warranty Information
TIMEX watches are manufactured to high-quality standards and are covered by a limited warranty against manufacturing defects. The specific terms and duration of the warranty may vary by region. Please retain your proof of purchase for warranty claims. For detailed warranty information, refer to the warranty card included with your purchase or visit the official TIMEX website.
8. Customer Support
For further assistance, technical support, or service inquiries regarding your TIMEX T100 Sports Watch, please contact TIMEX customer service. Contact details can typically be found on the official TIMEX website or on the packaging of your product. When contacting support, please have your model number (TW5M58400) and purchase information ready.
Official TIMEX Website: www.timex.com





