CASIO G‑SHOCK GM‑1000‑1A3 Men’s Mudmaster Twin‑Sensor Watch – Digital Compass & Thermometer, Mud & Shock Resistant, 200 M Water‑Resistant

The CASIO G‑SHOCK GM‑1000‑1A3 is a rugged tool designed for outdoor and extreme‑environment use. As part of the Mudmaster series, this Twin‑Sensor model equips you with a digital compass and thermometer while delivering the legendary durability of G‑SHOCK watches. With 200 metre water resistance, mud‑resistant structure, shock protection and highly legible dial features, the GM‑1000‑1A3 is built for those who go off the grid but stay on time.

Key Features:

• Model: GM‑1000‑1A3 (Mudmaster Twin‑Sensor)

• Twin sensors: Digital compass (measures direction 0°–359° in 1° increments) and thermometer (measures from –10 °C to +60 °C)

• Structure & durability:

  • Mud‑resistant button guard cylinder structure blocks sand and dirt from entering the buttons

  • Shock‑resistant G‑SHOCK construction protects the movement under harsh impacts

• Water Resistance: 200 metres (20 bar) — suitable for swimming, rugged outdoor wear and daily use

• Timekeeping & functions:

  • Analog and digital hybrid display — hour/minute hands plus a digital screen for mode info

  • World Time across 48 cities (in 31 time zones)

  • Stopwatch (1/100‑second precision)

  • Countdown timer (up to 60 minutes)

  • 5 daily alarms + hourly time signal

  • Full auto‑calendar up to year 2099

• Size & build: Approximate case dimensions ~56.2 × 55.3 × 17.3 mm; Weight around 94 g (varies by version)

• Style and practicality: Large Arabic numerals, bold hands with Neobrite luminous paint for visibility in low light, and dual digital sub‑displays for essential data at a glance

Why Choose the GM‑1000‑1A3:

• Built for tough environments: mud, dust, impact — made for work, adventure, travel and exploration

• Features (compass + thermometer) that add real practical value for outdoors and remote use

• Strong wrist presence with professional tool‑watch looks and serious durability

• Ideal for those who don’t just wear a watch—they rely on it.

What’s Included:

• Authentic CASIO G‑SHOCK GM‑1000‑1A3 watch

• G‑SHOCK branded presentation box

• Instruction manual explaining Twin‑Sensor and time features

• CASIO international warranty card

Keywords:

CASIO G‑SHOCK GM‑1000‑1A3, G‑SHOCK Mudmaster watch, twin sensor G‑SHOCK compass thermometer, 200m water resistant rugged G‑SHOCK, shock‑resistant men’s G‑SHOCK, mud resistant G‑SHOCK outdoor watch.

Specifications

Basic Information

Case size (L× W× H)

56.2 × 55.3 × 17.3 mm

Weight

94 g

Case and bezel material

Resin / Stainless steel

Band

Resin Band

Construction

Mud Resistant

Shock Resistant

Water resistance

200-meter water resistance

Power supply and battery life

Approx. battery life: 2 years on SR927W X 2

Sensor feature

Digital compass (NORTH) Hand indication of north (20 seconds continuous measurement) Measures and displays direction as one of 16 points Measuring range: 0 to 359° Measuring unit: 1° Bidirectional calibration Magnetic declination correction Bearing memory

Thermometer Display range: -10 to 60℃ (14 to 140℉) Display unit: 0.1℃ (0.2℉)

Exterior

Glass

Mineral Glass

Other

Neobrite

Watch Features

World time

World time 31 time zones (48 cities + coordinated universal time), daylight saving on/off

Stopwatch

1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times

Timer

Countdown timer Measuring unit: 1 second Countdown range: 60 minutes Countdown start time setting range: 1 minute to 60 minutes (1-minute increments)

Alarm/hourly time signal

5 daily alarms (with 1 snooze alarm)

Hourly time signal

Light

LED backlight (Super Illuminator) Auto light switch, 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

Battery display/alert

Low battery alert

Accuracy

Accuracy: ±15 seconds per month

Other features

12/24-hour format

Regular timekeeping: Analog: 3 hands (hour, minute (hand moves every 10 seconds), second) Digital: Hour, minute, second, pm, month, date, day