Casio G-Shock Master of G Premium Mudmaster GWG-100-1A3ER Watch

The Premium Mudmaster watch from the distinguished Master of G collection boasts a rugged build, providing exceptional resistance to mud, sand, and impact. Engineered for the toughest conditions, its water resistance rating of 20 bars ensures reliable performance even when submerged up to 200 meters deep.

Reliable timekeeping is delivered by the Japanese quartz movement caliber 5561, driven by Tough Solar technology, which transforms light into power stored in the CTL920. Superior accuracy is guaranteed by the module, which automatically updates time via the Multi-Band 6 system using radio signals from transmitters located across four continents.

Mud-resistant, shockproof design shields the watch from both mud and dust. The watchcase features scratch-resistant mineral glass along with a robust plastic body. Thanks to 20 bar water resistance, the watch is suitable for submersion up to 200 meters deep. A flexible plastic strap with a metal buckle guarantees comfort, and the high-performance material stands up to both moisture and sweat—perfect for demanding outdoor pursuits.

A dial equipped with both hands and a display provides digital-analog time indication in 12/24 hour format. The model comes with a Full Auto LED feature that activates backlight automatically when the wrist is turned in low-light conditions, along with a Neobrite coating on the hands and indexes that emits a glow after exposure to light.

In addition, the watch offers advanced features such as:

• 1/100 s stopwatch (measuring up to 60 minutes)
• Countdown timer
• 5 daily alarms
• World time function
• Automatic calendar
• Battery level indicator
• 12/24-hour display format

• Equipped with a quartz movement featuring solar power for reliable energy.
• Multi-Band 6 technology enables automatic time calibration across multiple regions.
• Shockproof and mudproof construction ensures durability in harsh conditions.
• Built to withstand water pressure up to 20 bar.
• Integrated stopwatch, countdown timer, multiple alarms, calendar, and world time functions.
• LED backlighting and Neobrite luminescent coating provide excellent visibility.
• Features a durable mineral crystal for enhanced scratch resistance.

Shade: Black/Green
Movement: quartz-solar
Time display: 12/24-hour format
Case material: plastic
Crystal: mineral glass
Band: plastic
Waterproof rating: 20 atm (200 m)
Case size: 54 x 56 mm
Thickness: 17 mm
Maximum strap length: 220 mm
Mass: 88 g
Brand: Casio, Japan