G-Shock GGB100Y-1A Master of G Land Mudmaster

The GG-B100 MUDMASTER employs high rigidity carbon in the case to keep damage and warping at bay and ensure extreme airtightness and shock resistance. This timepiece also features a filter to protect against mud, a stainless steel panel back, and a back cover made of shock-resistant fine resin embedded with glass fibers, giving it a high level of resistance to dust and mud. The bezel also uses three layers of fine resin with carbon fibre inserts. This tough, rugged design is accented in bright bold yellow. 
Practical and functional, this watch is equipped with digital compass, altimeter/barometer, thermometer and step counter. Easily correct the time using the dedicated G-SHOCK app, and tap into loads of other useful features including the Mission Log, which automatically records altitude data obtained from the watch and route data obtained by your smartphone.
 
Basic Information
Case size (L× W× H): 55.4 × 51.3 × 19.4 mm
Weight: 92 g
Case / bezel material: Carbon / Resin　
Resin Band
Shock Resistant
Mud Resistant
Carbon Core Guard structure
200-meter water resistance
Approx. battery life: 2 years on CR2025
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 (℉)
 
Smartphone Link/App Connectivity Features
Smartphone Link feature
Mobile link (Wireless linking using Bluetooth®)
Apps: G-SHOCK Connected
 
Exterior
Mineral Glass
Spherical Glass
Compatible band size: 145 to 215 mm
Neobrite
 
Watch Features
World time
38 time zones (38 cities + coordinated universal time)
Daylight saving on/off
Home city/World time city swapping
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
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)
5 daily alarms
Hourly time signal
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)
LED:White
Full auto-calendar (to year 2099)
Mute feature
Button operation tone on/off
Accuracy: ±15 seconds per month (with no mobile link function)
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