G-SHOCK MASTER OF G – LAND / MUDMASTER – Model GWGB1000-1A3

Overview

Professional gear built to challenge the limits of toughness. This MUDMASTER from the MASTER OF G line features tan accents inspired by tactical equipment. Stripped of unnecessary decoration, the restrained color palette reinforces the line’s commitment to true utility.

The GWG-B1000 places tan accents on the dial components and feature indicators, emphasizing practicality in actual field use. The multi-component exterior is finished in varying black textures and paired with a matte olive-green urethane band, expressing an intrepid yet understated sense of toughness.

Underneath is the MUDMASTER’s field-ready construction: shock, dust, mud, and vibration resistance with a Carbon Core Guard structure, 200-meter water resistance, and sapphire crystal with anti-reflective coating.

Triple Sensor brings compass, barometer/altimeter, and thermometer to the wrist, backed by Tough Solar power, Multi Band 6 radio control, and Bluetooth smartphone link.

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Key Highlights

✔ Tactical-inspired tan accents on dial and indicators
✔ Multi-textured black exterior with matte olive-green band
✔ Shock, dust, mud, and vibration resistant
✔ Carbon Core Guard structure
✔ Bio-based resin band
✔ Sapphire crystal with anti-reflective coating
✔ DLC-treated stainless steel parts, black ion plated bezel
✔ Triple Sensor: compass, barometer/altimeter, thermometer
✔ Altitude measurement −700 to 10,000 m
✔ Barometric pressure trend graph and alarm
✔ Tough Solar solar-powered timekeeping
✔ Multi Band 6 radio-controlled timekeeping
✔ Bluetooth mobile link (CASIO WATCHES app)
✔ World time, 38 time zones (55 cities)
✔ Sunrise / sunset display
✔ Double LED light (Super Illuminator)
✔ Shock resistant with 200-meter water resistance

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Technical Specifications

Basic Information

• Case Size (L × W × H): 58.7 × 52.1 × 16.2 mm
• Weight: 114 g
• Case & Bezel Material: Bio-based resin / Stainless steel
• Band: Bio-based resin band
• Construction: Shock resistant, vibration resistant, mud resistant, Carbon Core Guard structure
• Water Resistance: 200-meter water resistance
• Time Adjustment: Radio-controlled watch (Multi Band 6); Bluetooth auto time adjustment via smartphone
• Power Supply: Tough Solar (solar powered)

Sensors

• Compass: 16 directions / direction angle 0–359°, 60-second continuous measurement, north direction guideline, bearing memory, automatic horizontal / magnetic declination / orientation correction
• Barometer: 260–1,100 hPa (7.65–32.45 inHg), 1 hPa (0.05 inHg) unit, 20-hour trend graph (switchable to 30-minute intervals over 5 hours), pressure difference indicator ±10 hPa, pressure trend alarm, hPa/inHg changeover
• Altimeter: −700 to 10,000 m (−2,300 to 32,800 ft), 1 m (5 ft) unit, up to 30 manual memories, automatic recording of highest/lowest altitude and accumulated ascent/descent, altitude trend graph, difference indicator ±100 m / ±1,000 m, measurement interval 5 seconds / 2 minutes, m/ft changeover
• Thermometer: −10 to 60°C (14 to 140°F), 0.1°C (0.2°F) unit, °C/°F changeover

Smartphone Link

• App: CASIO WATCHES (Bluetooth mobile link)
• App Features: Auto time adjustment, easy watch setting, approx. 300 world time cities, app information, time & place, mission log, location indicator, location memory, mode/display switching customization, auto altitude correction, phone finder

Exterior

• Glass: Sapphire crystal with anti-reflective coating
• Crown: Screw Lock Crown
• Surface Treatment: DLC-treated (stainless steel portion), black ion plated bezel
• Compatible Band Size: 145–215 mm
• Other: Neobrite

Watch Features

• World Time: 38 time zones (55 cities + coordinated universal time), daylight saving on/off, auto summer time (DST) switching, home city / world time city swapping
• Sunrise/Sunset: Sunrise and sunset time display for a specific date
• Stopwatch: 1/100-second stopwatch, measuring capacity 23:59'59.99'', elapsed time, split time, 1st–2nd place times
• Timer: Countdown timer, 1-second unit, countdown range 60 minutes
• Alarm: 5 daily alarms, hourly time signal
• Light: Double LED light — full auto LED light for the face and LED backlight for the digital display (Super Illuminator, selectable duration 1.5 or 3 seconds, afterglow)
• Light Color: LED: White
• Calendar: Full auto-calendar (to year 2099)
• Mute Feature: Button operation tone on/off
• Hand Correction: Auto hand home position correction
• Energy Saving: Power Saving (display goes blank and hands stop in the dark)
• Battery Display: Battery level indicator
• Run Time: Approx. 6 months on rechargeable battery with normal use without light after charge; approx. 24 months in total darkness with power save on after full charge
• Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)
• Other Features:
  • 12/24-hour format
  • Hand shift feature (hands move out of the way for an unobstructed digital display)
  • Analog: 3 hands (hour, minute — moves every 10 seconds, second), 2 dials
  • Digital: Hour, minute, second, PM, month, date, day

Time Calibration Signals

• Stations: DCF77 (Germany, 77.5 kHz), MSF (England, 60.0 kHz), WWVB (United States, 60.0 kHz), JJY (Japan, 40.0 / 60.0 kHz), BPC (China, 68.5 kHz)
• Reception: Auto receive up to six times a day (five for the Chinese signal), manual receive, latest reception results

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Summary

The GWGB1000-1A3 is the tactical-toned MUDMASTER: mud, dust, and vibration resistant with a Carbon Core Guard structure, Triple Sensor, sapphire crystal, Tough Solar, Multi Band 6, and Bluetooth, on a matte olive-green bio-based resin band.

GWGB1000-1A3 — Triple Sensor MUDMASTER in black and olive green.

For more details, visit the official CASIO website here.

Warranty:

• The watch is covered by a official warranty, providing assurance and protection for your purchase.

▶︎Processing Time & Shipping Policy
▶︎Refund policy
▶︎We only carry G-SHOCK USA products.
▶︎Unfortunately, we DO NOT ship internationally.