G-SHOCK GG-B100XMB-1A - MUDMASTER
G-SHOCK GG-B100XMB-1A - MUDMASTER
The same steel guards, finished dark, turn a watch that announced itself into one that does not.
The GG-B100XMB is a MUDMASTER in G-SHOCK's Master of G family, built on the Carbon Core Guard case with mud-resistant button structures, and fitted with stainless steel bezel components finished in black rather than left bare. At 104 grams it matches its polished sibling in weight and reads nothing like it.
Blacked-out steel guards over a black case and band, with amber accents on the dial and crown protector, in a case 55.4 by 51.3 mm and 19.4 mm deep, under a spherical mineral crystal. Module 5744 gives compass, altimeter, barometer and thermometer, step tracking, world time, a stopwatch, a countdown timer and alarms, plus Bluetooth to the CASIO WATCHES app. 200 m water resistant.
The quiet version of the most instrumented watch in the line. Only the amber gives it away.
Perfect for: blacked out MUDMASTER watches, quad sensor tactical watches, dark Master of G watches.
Specifications
- Collection
- Master of G
- Case Diameter
- 51.3 mm
- Case Thickness
- 19.4 mm
- Case Material
- Carbon-bio / Stainless steel
- Crystal
- Mineral Glass; Spherical Glass
- Water Resistance
- 200 m (20 ATM)
- Dial Color
- Black
- Movement
- Quartz
- Caliber
- Casio module 5744
- Power Reserve
- 2 years on CR2025
- Functions
- World time, Stopwatch, Countdown timer, Alarm, Auto calendar, Digital compass, Altimeter, Barometer, Thermometer, Step tracker, Bluetooth
- Strap / Bracelet
- Resin Band (Biomass plastics)
- Strap Color
- Black
- Reference
- GG-B100XMB-1A
- Released
- 2026-03-05
- Case Size
- 55.4 x 51.3 x 19.4 mm
- Weight
- 104 g
- Finish
- Neobrite
- Construction
- Shock Resistant; Mud Resistant; Carbon Core Guard structure
- Band Size
- 145～215mm
- Power
- 2 years on CR2025
- Accuracy
- ±15 seconds per month (with no mobile link function)
- Time Adjustment
- Bluetooth: Connects to a smartphone and automatically adjusts the time
- Calendar
- Full auto-calendar (to year 2099)
- Smartphone Link
- Mobile link (Wireless linking using Bluetooth®)
- Illumination
- Double LED light LED light for the face (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) LED backlight for the digital display (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
- World Time
- 38 time zones (38 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping
- Stopwatch
- 1/100-second stopwatch 00'00''00~59'59''99 (for the first 60 minutes) 1:00'00~23:59'59 (after 60 minutes) Measuring unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) Measuring modes: Elapsed time, split time, 1st-2nd place times
- Timer
- Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 second to 24 hours (1-minute increments and 1-hour increments)
- Alarm
- 5 daily alarms; Hourly time signal
- Other Features
- 12/24-hour format; Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.); Analog: 3 hands (hour, minute (hand moves every 10 seconds), second) Digital: Hour, minute, second, am/pm, month, date, day