Introduction
Thank you for choosing the SKMEI Digital Military Watch Model 1257. This manual provides detailed instructions for setting up, operating, and maintaining your watch. Please read this manual carefully to ensure proper use and to enjoy all the features of your new timepiece.
Product Overview
The SKMEI Model 1257 is a robust digital watch designed for outdoor and daily use. It features a digital display, night light, alarm, chronograph, countdown timer, and is water-resistant up to 50 meters.

Image: Front view of the SKMEI Digital Military Watch Model 1257, displaying the time, day, and date. The watch has a round green case and a green silicone band.
Button Functions

Image: Close-up of the SKMEI Digital Military Watch face, showing the four control buttons labeled: LIGHT (top left), MODE (bottom left), START (top right), and RESET (bottom right). The digital display shows time, day, and date.
- LIGHT: Activates the EL backlight for illumination.
- MODE: Cycles through different watch modes (Time, Chronograph, Alarm, Countdown).
- START: Used to start/stop functions in Chronograph mode, adjust settings in setting mode.
- RESET: Used to reset functions in Chronograph mode, adjust settings in setting mode.
Setup
Setting Time and Date
- From the Time Display mode, press the MODE button three times to enter Time Setting mode. The seconds digits will flash.
- Press the RESET button to select the item to be adjusted (seconds, hour, minute, month, date, day of week). The selected item will flash.
- Press the START button to increase the value. Hold START to rapidly advance the value.
- To switch between 12-hour and 24-hour format, press the RESET button until the hour digits are flashing, then press START to toggle.
- Once all settings are adjusted, press the MODE button to exit Time Setting mode and return to the Time Display.
Operating Instructions
Using the Night Light (EL Backlight)
Press the LIGHT button at any time to illuminate the display. The backlight will remain on for a few seconds. This feature ensures clear visibility in low-light conditions.

Image: Two SKMEI Digital Military Watches side-by-side in a dark setting. The watch on the right shows its display illuminated by the EL backlight, demonstrating the night light function.
Chronograph (Stopwatch) Function
- From Time Display mode, press the MODE button once to enter Chronograph mode. The display will show "00:00:00".
- Press the START button to begin timing.
- Press the START button again to pause timing.
- Press the RESET button to reset the chronograph to "00:00:00".
- To record split times, press RESET while the chronograph is running. The split time will be displayed. Press RESET again to return to the running time.
- Press the MODE button to exit Chronograph mode.
Alarm Function
- From Time Display mode, press the MODE button twice to enter Alarm mode. The display will show the alarm time.
- Press the RESET button to select the hour or minute to be adjusted. The selected item will flash.
- Press the START button to increase the value. Hold START to rapidly advance the value.
- To activate/deactivate the alarm, press the START button while in Alarm mode (without any digits flashing). An alarm icon will appear/disappear on the display.
- To activate/deactivate the hourly chime, press the RESET button while in Alarm mode (without any digits flashing). A chime icon will appear/disappear.
- Press the MODE button to exit Alarm mode.
Countdown Timer Function
Note: The presence of a countdown timer is indicated in the product information. Specific operation steps may vary slightly.
- From Time Display mode, press the MODE button four times to enter Countdown Timer mode.
- Press the RESET button to select the hour, minute, or second to be adjusted.
- Press the START button to set the desired countdown time.
- Press START to begin the countdown.
- Press START again to pause the countdown. Press START again to resume.
- Press RESET to stop and reset the countdown to the initial set time.
- When the countdown reaches zero, an alarm will sound.
- Press the MODE button to exit Countdown Timer mode.
Maintenance
Water Resistance
This watch is water-resistant up to 50 meters (5 ATM). This means it is suitable for showering, swimming in shallow water, and general water exposure. It is not suitable for diving, snorkeling, or high-pressure water activities.
- Do not press any buttons while the watch is submerged in water.
- Avoid exposing the watch to hot water or steam, as this can compromise the water seals.
- After exposure to saltwater, rinse the watch with fresh water and dry it thoroughly.

Image: The SKMEI Digital Military Watch partially submerged in water, with a visual indicator of "50M Waterproof", illustrating its water resistance capability.
Battery Replacement
The watch is powered by a standard watch battery. When the display dims 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 the water resistance seal is properly maintained.
Cleaning
Clean the watch case and band with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials, which can damage the watch's finish or seals.
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 this model typically does not have a lock). If submerged, do not press buttons. If the issue persists, a battery replacement might resolve it.
- Time is incorrect: Re-set the time and date following the "Setting Time and Date" instructions.
- Water inside the watch: Immediately take the watch to a professional watch repair service. Do not attempt to open the watch yourself, as this will void any potential warranty and may cause further damage.
Specifications

Image: Diagram showing the dimensions of the SKMEI Digital Military Watch Model 1257, including dial width (50mm), dial thickness (15mm), band width (22mm), and watch length (265mm). A table lists basic information: Brand (SKMEI), Model (1257), Weight (63g), Movement (Digital), Mirror (Resin), Case (PC), Band (Silica Gel), Buckle (PC), W/P (50M), and Functions (Double time, Chrono, Alarm, Countdown, Week, EL, 12/24 hour clock).
| Feature | Specification |
|---|---|
| Brand | SKMEI |
| Model Number | SKMEI-1257 |
| Display Type | Digital |
| Movement Type | Digital (Battery Powered) |
| Case Material | Polycarbonate (PC) |
| Band Material | Silicone |
| Clasp Type | Buckle |
| Water Resistance | 50 Meters (5 ATM) |
| Dial Width | 50 mm |
| Case Thickness | 15 mm |
| Band Width | 22 mm |
| Band Length | 265 mm |
| Functions | Time, Date, Day, EL Backlight, Alarm, Chronograph, Countdown Timer, 12/24 Hour Format |
Warranty and Support
For warranty information and customer support, please refer to the documentation included with your purchase or contact SKMEI customer service directly. Details are typically available on the official SKMEI website or through your retailer.
Manufacturer: SKMEI
Date First Available: May 29, 2025