Casio G-Shock Mudmaster Extreme Multiple Sensor Bluetooth Men's Watch | GG-B100XMB-1A

Built for those who push beyond limits, the Casio G-Shock Mudmaster Extreme Multiple Sensor Bluetooth Men’s Watch GG-B100XMB-1A is a mission-ready tool engineered for the world’s harshest environments. Part of the elite Master of G series, this rugged Mudmaster is trusted by rescue teams, rangers, and outdoor professionals who need absolute reliability in mud, dust, and debris-filled terrain. Its carbon fiber–reinforced case provides exceptional rigidity and impact resistance, while a specialized mud-resistant structure seals out dirt and prevents damage under extreme conditions. The standout feature of this model is its black ion-plated stainless steel bezel, finished with a mirror sheen that combines outstanding scratch resistance with a bold, tactical appearance. Bio-based resin components in the case and strap help reduce environmental impact without compromising durability. Packed with practical functions, the watch includes a digital compass, altimeter/barometer, thermometer, and step counter. Bluetooth connectivity enables automatic time updates and advanced features through the smartphone app, including Mission Log, which records route and altitude data for your adventures. Double LED illumination ensures visibility in darkness, and 200 meters water resistance provides confidence in wet conditions. Tough, intelligent, and uncompromising, the GG-B100XMB-1A is the ultimate companion for decisive action in the most demanding environments.. For adventure and rugged style at Watch Zone. UPC: 4549526409929

Watch Features

Smartphone Link/App Connectivity Features:

Mobile link (Wireless linking using Bluetooth®)

Apps: CASIO WATCHES

Sensor feature

Step count using a 3-axis acceleration sensor: 0 to 999,999 step count display range

Power Saving: Auto sensor sleep state entry after fixed period of non-activity

Altimeter

Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft.)

Measuring unit: 1 m (5 ft.)

Hand indication graph of altitude differential

Manual memory measurements (up to 14 records, each including altitude, date, time)

Auto log data (High/low altitudes, cumulative ascent and descent)

Others: Relative altitude readings (±100 m /±1000 m), selectable measurement interval: 5 seconds or 2 minutes (1 second for first 3 minutes only)

*Changeover between meters (m) and feet (ft)

Barometer

Measuring range: 260 to 1,100 hPa (7.65 to 32.45 inHg)

Measuring unit: 1 hPa (0.05 inHg)

Hand indication of pressure differential (±10 hPa)

Atmospheric pressure tendency graph (last 20 hours or last 56 hours)

Barometric pressure tendency information alarm (beep and arrow indicates significant changes in pressure)

The atmospheric pressure tendency graph can show the last 20 minutes or last 56 minutes of measurements.

The hand indication of pressure differential shows values in units of ±0.1 hPa.

*Changeover between hPa and inHg

Digital compass

Measures and displays direction as one of 16 points

Measuring range: 0 to 359°

Measuring unit: 1°

60 seconds continuous measurement

Hand indication of north

Magnetic declination correction

Direction calibration (2-point calibration, figure eight calibration, auto calibration)

Thermometer

Measuring range: -10 to 60℃ (14 to 140℉)

Measuring unit: 0.1℃ (0.2℉)

*Changeover between Celsius (℃) and Fahrenheit (℉)

World time

38 time zones (38 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping

Sunrise/sunset display

Sunrise, sunset time display

Sunrise time and sunset time for specific date

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

Countdown 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/hourly time signal

5 daily alarms

Hourly time signal

Light

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)

Light color

LED: White

Calendar

Full auto-calendar (to year 2099)

Mute feature

Button operation tone on/off

Accuracy

Accuracy: ±15 seconds per month (with no mobile link function)

Other features

12/24-hour format

Hand shift feature

Regular timekeeping:

Analog: 3 hands (hour, minute (hand moves every 10 seconds), second) 

Digital: Hour, minute, second, am/pm, month, date, day