Introduction
This manual provides detailed instructions for the operation and maintenance of your Umbro UMB-105-2 Quartz Watch. Please read this manual thoroughly before using your watch to ensure proper function and longevity.
The Umbro UMB-105-2 is a digital quartz watch featuring a durable black stainless steel case and strap, mineral crystal, and a Miyota 2025 movement. It is water-resistant up to 30 meters and includes functions such as light, dual time, alarm, chronograph, and calendar.

Image: Front view of the Umbro UMB-105-2 digital quartz watch.
Setup
Initial Inspection
Upon unboxing, inspect the watch for any visible damage. Ensure all buttons are functional and the display is clear. The watch comes in a branded box.

Image: Umbro UMB-105-2 watch packaging.
Wearing the Watch
Adjust the stainless steel strap to fit comfortably on your wrist. The watch should be snug but not too tight, allowing for proper blood circulation.

Image: Umbro UMB-105-2 watch on a wrist.
Operating Instructions
The Umbro UMB-105-2 watch features several buttons for various functions. Refer to the image below for button identification.

Image: Front view of the Umbro UMB-105-2 watch with button labels.
Button Functions:
- MODE: Cycles through different modes (Time, Alarm, Chronograph, Dual Time, Calendar).
- ADJUST: Used to enter and exit setting modes.
- SELECT: Selects items within a setting mode.
- REVERSE / FORWARD: Adjusts values (decrease/increase) during setting.
- START-STOP: Starts and stops the chronograph.
- LIGHT: Illuminates the display for visibility in low light conditions.
Setting the Time and Date:
- In Timekeeping Mode, press and hold the ADJUST button until the seconds begin to flash.
- Press the MODE button to cycle through the settings: Seconds → Hour → Minute → Year → Month → Day.
- Use the REVERSE and FORWARD buttons to adjust the flashing value.
- Once all settings are correct, press the ADJUST button to exit the setting mode.
Using the Alarm:
- Press the MODE button until you reach the Alarm Mode.
- Press and hold the ADJUST button until the alarm hour flashes.
- Use REVERSE and FORWARD to set the alarm hour.
- Press MODE to select minutes, then use REVERSE and FORWARD to set the alarm minutes.
- Press ADJUST to confirm and exit.
- To turn the alarm on/off, press the SELECT button in Alarm Mode.
Using the Chronograph (Stopwatch):
- Press the MODE button until you reach the Chronograph Mode.
- Press START-STOP to begin timing.
- Press START-STOP again to pause timing.
- Press START-STOP to resume timing.
- To reset the chronograph, press ADJUST while the chronograph is stopped.
Using Dual Time:
- Press the MODE button until you reach Dual Time Mode.
- Press and hold the ADJUST button to enter setting mode.
- Use REVERSE and FORWARD to set the hour and minute for the second time zone.
- Press ADJUST to confirm and exit.
Using the Light:
Press the LIGHT button to illuminate the display. The light will remain on for a few seconds.
Maintenance
Cleaning:
Wipe the watch regularly with a soft, dry cloth to remove dust and dirt. For stubborn marks on the stainless steel case and strap, a slightly damp cloth can be used, followed by immediate drying.
Water Resistance:
The watch is water-resistant up to 30 meters (3 ATM). This means it is suitable for everyday use and can withstand splashes or brief immersion in water. It is not suitable for swimming, diving, or showering with hot water, as steam can penetrate the seals.
Battery Replacement:
The watch is powered by a quartz movement, which requires a battery. When the display becomes dim or functions become erratic, it may be time to replace the battery. Battery replacement should be performed by a qualified watch technician to ensure the water resistance seal is properly maintained.

Image: Back view of the Umbro UMB-105-2 watch, showing the case back.
Storage:
When not in use, store your watch in a cool, dry place away from direct sunlight and extreme temperatures. Avoid exposing the watch to strong magnetic fields.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim. | Low or dead battery. | Replace the battery (recommended by a professional). |
| Time is incorrect. | Time not set properly or accidental adjustment. | Refer to "Setting the Time and Date" section to reset. |
| Buttons are unresponsive. | Watch may be in a locked mode or battery is low. | Try pressing the MODE button to cycle modes. If still unresponsive, consider battery replacement. |
| Water condensation under crystal. | Exposure to excessive moisture or temperature changes. | Avoid further water exposure. Seek professional inspection to prevent internal damage. |
Specifications
- Model: UMB-105-2
- Brand: Umbro
- Movement: Miyota 2025 Quartz
- Display: Digital
- Case Material: Stainless Steel
- Strap Material: Stainless Steel
- Crystal: Mineral
- Color: Black
- Water Resistance: 30 meters (3 ATM)
- Functions: Light, Dual Time, Alarm, Chronograph, Calendar
- Approximate Package Dimensions: 12 x 8.9 x 7.8 cm
- Approximate Package Weight: 200 g
- Manufacturer: TS WATCHES
Warranty and Support
For warranty information and support inquiries, please refer to the documentation provided with your purchase or contact the retailer where the watch was acquired. Keep your proof of purchase for warranty claims.





