Introduction
This manual provides detailed instructions for the Timex DGTL Mako Digital Watch, model TW5M23600. Please read this manual thoroughly to understand the watch's features and ensure proper operation and care.
The Timex DGTL Mako is a robust digital watch designed for an active lifestyle, featuring a durable resin case, silicone strap, and essential functions like a chronograph, alarm, and Indiglo night-light. It is water-resistant to 50 meters (165 feet).

Front view of the Timex DGTL Mako Digital Watch, showcasing its black case, gold-tone bezel, and digital display.
Setup
Before using your watch, you may need to set the time, date, and other functions. Refer to the diagrams below for button identification.

Side view of the watch, showing the control buttons on the left and right sides of the case.
Setting Time and Date
- Press and hold the MODE button (typically bottom-left) until the time display flashes.
- Use the SET/START button (typically top-right) to adjust the flashing digit (hours, minutes, seconds).
- Press the MODE button again to cycle through hours, minutes, 12/24-hour format, year, month, and day settings.
- Use the SET/START button to change the values.
- Once all settings are correct, press the INDIGLO button (typically top-left) to exit the setting mode.
Setting the Alarm
- From the normal time display, press the MODE button repeatedly until "ALARM" or "AL" appears.
- Press and hold the SET/START button until the alarm time flashes.
- Use the SET/START button to adjust the flashing digit (hours, minutes).
- Press the MODE button to switch between hours and minutes.
- Press the INDIGLO button to exit the alarm setting mode.
- To activate/deactivate the alarm, press the SET/START button while in alarm mode. An alarm icon will appear when active.
Operating Instructions
Using the Chronograph (Stopwatch)
- From the normal time display, press the MODE button repeatedly until "CHRONO" or "CHR" appears.
- Press the SET/START button to start the chronograph.
- Press the SET/START button again to pause/resume.
- To record a lap time, press the LAP/RESET button (typically bottom-right) while the chronograph is running. The display will show the lap time while the main timer continues in the background.
- To reset the chronograph, ensure it is paused, then press the LAP/RESET button.
Using the Countdown Timer
- From the normal time display, press the MODE button repeatedly until "TIMER" or "TMR" appears.
- To set the timer, press and hold the SET/START button until the time flashes.
- Use the SET/START button to adjust the flashing digit (hours, minutes, seconds).
- Press the MODE button to switch between hours, minutes, and seconds.
- Press the INDIGLO button to exit setting mode.
- Press the SET/START button to start the countdown.
- Press the SET/START button again to pause/resume.
- To reset the timer, ensure it is paused, then press the LAP/RESET button.
Indiglo Night-Light
Press the INDIGLO button (typically top-left) to activate the Indiglo night-light for easy viewing in low-light conditions. The light will remain on for a few seconds.
Dual Time Zones
Your watch supports two time zones. To access and set the second time zone (T2):
- From the normal time display, press the MODE button repeatedly until "T2" appears.
- Press and hold the SET/START button until the T2 time flashes.
- Use the SET/START button to adjust the flashing digit (hours, minutes).
- Press the MODE button to switch between hours and minutes.
- Press the INDIGLO button to exit the T2 setting mode.
Maintenance
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 entry.
Cleaning Your Watch
To clean the watch case and silicone strap, use a soft, damp cloth. For stubborn dirt, a mild soap solution can be used, followed by rinsing with clean water and thorough drying. Avoid harsh chemicals or abrasive materials, as these can damage the watch's finish.

Back view of the watch, highlighting the silicone strap and buckle mechanism.
Battery Replacement
The watch uses one Lithium Metal battery (included). When the display becomes dim or functions become erratic, it may be time to replace the battery. Battery replacement should ideally be performed by a qualified watch technician to ensure water resistance is maintained.
Troubleshooting
| Problem | Possible Cause / Solution |
|---|---|
| Display is dim or blank. |
|
| Watch not keeping accurate time. |
|
| Buttons are unresponsive. |
|
| Alarm does not sound. |
|
Specifications
- Model Number: TW5M23600
- Case Material: Resin
- Strap Material: Silicone
- Case Diameter: 44mm
- Strap Width: 16mm
- Water Resistance: 50 meters (165 feet)
- Display Type: Digital, Negative Display
- Light: Indiglo Night-Light
- Functions: 24-hour Chronograph (1/100-second resolution), 24-hour Countdown Timer (1-second resolution), Daily Alarm, Two Time Zones, 24-hour Military Time Mode, Day, Date & Month Calendar
- Lens Material: Acrylic
- Battery: 1 Lithium Metal battery (included)
Warranty and Support
For detailed warranty information, please refer to the official Timex website or the warranty card included with your purchase.
If you require further assistance or support, please visit the official Timex store or contact Timex customer service.