Casio G-SHOCK X British Army Mudmaster GG-B100BA-1A

CASIO has announced the first timepiece to be released as part of G-SHOCK’S and the Ministry of Defence’s new partnership. The partnership positions the watch brand as an official partner to HM Armed Forces.

G-SHOCK is already the watch of choice for many in the Armed Forces and this limited-edition release further cements the partnership as an official supplier to the Ministry of Defence.

Casio G-SHOCK X British Army Mudmaster GG-B100BA-1A

The British Army X G-SHOCK MUDMASTER was designed in conjunction with the British Army, built to withstand the harshest land environments and features an updated Carbon Core Guard Structure and triple-layered carbon-insert bezel, providing durability in a lightweight case.

Casio G-SHOCK X British Army Mudmaster GG-B100BA-1A

The special edition Mudmaster features a camouflage design inspired by the Army’s own Multi Terrain Pattern. Furthermore, the model sports a stealth-black dial, specifically requested by the British Army so as not to attract undue attention when worn on operations.

Casio G-SHOCK X British Army Mudmaster GG-B100BA-1A

MUDMASTER’S iconic cylindrical button structure, which further limits debris from entering the watch, as well as a textured band and large buttons to ensure ease of use and high visibility. Boasting a dual layered case back of thin stainless steel and fine resin to keep it airtight, it becomes resistant to shocks while providing a comfortable feel to wear from day to night.

Casio G-SHOCK X British Army Mudmaster GG-B100BA-1A

This special MUDMASTER collaboration comprises of many new features, including location and activity-tracking technology.

Casio G-SHOCK X British Army Mudmaster GG-B100BA-1A

For example, as part of the Bluetooth® connectivity capabilities via the G-SHOCK Connected App, it is equipped with a special function within the app that provides a location indicator, mission log memory, location memory, sunrise and sunset data, calories burned and more. In addition, the timepiece’s Quad sensors – compass, thermometer, altimeter/barometer, and step tracker – further enhance its capabilities.

Technical details

Model: Casio G-SHOCK X British Army Mudmaster GG-B100BA-1A

Shock-resistant; mud-resistant
Water Resistance 20 bars / 200M

Standard Bluetooth® low energy
Signal Range Up to 2m (may differ depending on surrounding conditions)

World Time
38 time zones (38 cities and Coordinated Universal Time); daylight saving on/off; home time/world time switching

1/100 second; measuring capacity: 0’00”00~59’59”99 (for the first 60 minutes), 1:00’00~23:59’59 (after 60 minutes); measuring unit: 1/100 seconds (for the first 60 minutes), 1 second (after 60 minutes); measuring capacity: 23:59’59,99”; measuring modes: elapsed time, split time, 1st and 2nd place times

Countdown Timer
Measuring unit: 1 second; countdown range: 24 hours; countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)

5 daily alarms; hourly time signal

Other Functions
Smartphone Link functions (link with compatible smartphone through Bluetooth®); digital compass; barometer; altimeter (relative altitude readings); thermometer; step counter; sunrise/sunset time display; full auto double LED backlight with afterglow:1.5/3.0 seconds

Battery Life
Approx. 2 years on CR2025

Size of Case
3-9H 34.9mm→53.1mm

Total Weight