Overview
GM12 Operation Guide
Your watch has a dependable 3-hand quartz movement featuring:
- Hour hand
- Minute hand
- Second hand
- Quick-set date
Crown Function Summary
| Control | Locked | 1st Position | 2nd Position |
|---|---|---|---|
| Crown | Sealed / Normal run mode | Date setting | Time setting |
Setting the time
- Pull to Position 2
- Rotate to set the correct time
- Push crown fully back to Position 0
Always lock the crown before water exposure.
Setting the Date
- Pull to Position 1
- Rotate anti-clockwise to adjust the date
- Push back to Position 0
Avoid setting the date between 9PM–3AM
Standard Maintenance & Precautions
- Always push the crown back in after setting to preserve water-resistance.
- Do not change the date when the watch time is between 9 PM and 1 AM.
- Rinse watch with fresh water after salt or chlorine
- Do not operate the crown when wet
- Avoid soaps, fragrances, and solvents on seals
- For optimal accuracy: battery life is approx. ~2 to 3 years; maintain service as needed.
- Avoid strong chemicals & solvents
- Clean with a soft microfiber cloth
- Keep away from magnets
Water Resistance
5 ATM (50M)
Suitable For:
- Hand-washing
- Rain / splashes
- Swimming in shallow water
- Showering (cool water)
Avoid:
- Hot showers, saunas or steam rooms
- High-pressure water (jetskis, water guns)
- Pressing chronograph buttons underwater
- Diving or snorkelling
Always ensure the crown is fully pushed in.