Product Overview
The Timex Marathon Mid-Size Digital Watch is designed for active lifestyles, offering essential timekeeping functions in a durable, water-resistant design. Key features include a daily alarm, two time zone settings, a 24-hour stopwatch, and the Indiglo night-light for low-light visibility. It is water resistant up to 50 meters.

Image: Front view of the Timex Marathon Mid-Size Digital Watch, showing the digital display and button labels.
Button Functions
The watch features four primary buttons:
- MODE: Cycles through time, alarm, stopwatch, and second time zone modes.
- RESET: Used to clear stopwatch, adjust settings, or reset values.
- ST/STP (Start/Stop): Starts and stops the stopwatch, or increases values during setting.
- LIGHT: Activates the Indiglo night-light for illumination.
Video: A 21-second demonstration of the Timex Marathon Mid-Size Digital Watch, showcasing its design and button placement.
Setup Instructions
Setting Time and Date
- From the time display, press and hold the RESET button until the seconds begin to flash.
- Press the MODE button to cycle through seconds, hours, minutes, month, date, and day of the week.
- Use the ST/STP button to adjust the flashing value. Hold ST/STP to change values quickly.
- Once all settings are correct, press the RESET button to exit setting mode.
Setting the Alarm
- From the time display, press the MODE button until "AL" or "ALARM" appears on the screen.
- Press and hold the RESET button until the alarm hours begin to flash.
- Use the ST/STP button to adjust the alarm hour. Press MODE to select minutes.
- Use the ST/STP button to adjust the alarm minutes.
- Press the RESET button to save the alarm time.
- To activate/deactivate the alarm, press ST/STP while in alarm mode. An alarm icon will appear/disappear.
Setting Second Time Zone (T2)
- From the time display, press the MODE button until "T2" or "DUAL TIME" appears.
- Press and hold the RESET button until the hours begin to flash.
- Use the ST/STP button to adjust the flashing value. Press MODE to cycle through hours and minutes.
- Press the RESET button to save the second time zone.
Operating Instructions
Using the Stopwatch
- From the time display, press the MODE button until "ST" or "STOPWATCH" appears.
- Press ST/STP to start the stopwatch.
- Press ST/STP again to pause the stopwatch.
- Press RESET to clear the stopwatch to zero.
- To resume, press ST/STP.
Using Indiglo Night-Light
Press the LIGHT button at any time to illuminate the watch display for a few seconds. This feature is useful in low-light conditions.
Maintenance
- Cleaning: Clean the watch with a soft, damp cloth. Avoid harsh chemicals.
- Water Resistance: This watch is water resistant to 50 meters (164 feet). It is suitable for short periods of recreational swimming, but not for diving or snorkeling. Do not press any buttons while the watch is submerged in water.
- Battery Replacement: Battery replacement should be performed by a qualified watch technician to ensure water resistance is maintained. The watch uses 1 Lithium Metal battery.

Image: The Timex Marathon Mid-Size Digital Watch, designed for water resistance up to 50 meters.
Troubleshooting
- Display is blank or dim: The battery may be low or depleted. Replace the battery.
- Buttons are unresponsive: Ensure the watch is not in a locked mode (if applicable, though not specified for this model). If issues persist, a soft reset (removing and reinserting battery) by a professional may be required.
- Time is inaccurate: Re-set the time and date following the setup instructions. If inaccuracy persists, the watch module may require service.
- Water inside the watch: If water appears inside the watch, immediately take it to a qualified service center. This indicates a breach in the water resistance seal.
Specifications
| Feature | Detail |
|---|---|
| Model Number | TW5K84800M6 |
| Brand | Timex |
| Display Type | Digital |
| Movement Type | Quartz |
| Case Material | Resin |
| Band Material | Resin |
| Water Resistance Depth | 50 Meters (164 Feet) |
| Power Source | Battery Powered (1 Lithium Metal battery included) |
| Product Dimensions | 3.4 x 3 x 2.6 inches |
| Item Weight | 1.12 ounces |

Image: Close-up of the watch face, showing digital display and button labels.
Warranty and Support
The Timex Marathon Mid-Size Digital Watch comes with a 1-year manufacturer's warranty. For warranty claims or technical support, please refer to the official Timex website or contact their customer service. Keep your proof of purchase for warranty validation.
For additional support and detailed manuals, visit the Timex Official Website.