Casio

G-Shock Mudmaster GG-B100X

GG-B100 update with a location indicator set from the app

Current
  • Best value (based on RRP)

Launched 2026RRP £349, the maker's recommended retail price

The GG-B100X is a battery-powered Mudmaster with Bluetooth, a step counter, compass, altimeter, barometer and thermometer. Its location indicator points to any place set in the phone app, using the phone's location.

Key specifications

Overall score
5.5 out of 10,Mid-rangeHow we score
Case size
length 55.4 mm, width 51.3 mm, height 19.4 mm
Weight
93 g
Water resistance depth
200 m

Full specification

Size and weight

Case size
70 mmside profile15 mmlength 55.4 mm, width 51.3 mm, height 19.4 mm
Weight
93 g

Power and timekeeping

Solar charging
No
Radio time sync (Multi-Band 6)
No

Connections and navigation

Bluetooth
Yes
Phone app features
Auto time adjustment, location indicator, mission log, step count data transfer, auto altitude calibration, phone finder, about 300 world time cities
Navigation to a set point
Uses the phone's location

Sensors

Digital compass
Yes
Altimeter and barometer
Yes
Thermometer
Yes
Step counter
Yes

Build

Analogue hands
Yes
Sapphire crystal
No
Vibration resistant (as listed by Casio)
No
Carbon Core Guard case
Yes
Water resistance depth
200 m
Materials
Carbon fibre-reinforced bio-based resin case, carbon fibre bezel, bio-based resin band

Variants

3 variants

  • GG-B100X-1ABlack

    UK model code
    GG-B100X-1AER
    RRP
    £349
  • GG-B100X-1A3Black, olive band

    UK model code
    GG-B100X-1A3ER
    RRP
    £349
  • GG-B100X-1A9Black, orange band

    UK model code
    GG-B100X-1A9ER
    RRP
    £349

Alternatives

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Sources

Specifications last checked on .

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