Brand: CASIO Model: MASTER OF G - LAND MUDMASTER GWG-1000-1AJF This radio-controlled solar model from the G-SHOCK “Mudmaster” series is designed for extreme land use, where debris and dirt pile up or scatter. It achieves the dustproof and mud-resistant construction required for missions in dirt and mud. Multiple internal gaskets in buttons and shafts prevent mud ingress. It also features a shock-resistant structure capable of withstanding the use of large equipment like electric cutters and crushers. Furthermore, it incorporates a Triple Sensor to acquire direction, barometric pressure/altitude, and temperature information. High visibility is ensured through large Arabic numerals, a double LED light, and a sapphire crystal glass. The band features a texture inspired by heavy machinery grips and slip resistance. The hour and minute hands use extra-thick hands with an arrowhead motif. All buttons feature checkering for enhanced operability, completing a design brimming with military flair. This G-SHOCK supports tough men undertaking harsh land missions. Specifications Basic Information Case Size (H × W × D) 56.7 × 56.1 × 18 mm Weight 119 g Case/Bezel Material Resin/Stainless Steel Resin Band Shock-Resistant Structure Dust/Mud-Resistant Structure Water Resistance 20 ATM Water Resistance Time Correction Radio-Controlled Clock Compatible with Japan, North America, Europe, and China Regions MULTIBAND6 Power Source/Battery Life Tough Solar (Solar Charging System) Sensor Functions Barometric Pressure Measurement (Range: 260–1,100 hPa (7.65–32.45 inHg), 1 hPa (0.05 inHg) increments), Barometric Pressure Trend Graph (Displays past 20 hours), Barometric Pressure Difference Indicator (Range: ±10 hPa/1 hPa increments), Barometric Pressure Trend Information Alarm (Alerts with an arrow and audible tone when significant barometric pressure changes occur) Compass Function: Measures 16 cardinal points and azimuth angles (0–359°), Continuous azimuth measurement (60 seconds), North-seeking function, Magnetic declination correction function, Azimuth correction function (2-point correction) Altitude measurement function / Relative altimeter (Measurement range: -700 to 10,000 m (-2300 to 32800 ft), 1 m (5 ft) increments), Altitude difference indicator (Measurement range 1: 100 m/5 m increments, Measurement range 2: 1000 m/50 m increments), Altitude trend graph, Measurement interval setting function (5 seconds/2 minutes), Altitude Memory (Manual memory for up to 30 entries: date/time/altitude), Auto-recorded Data (Max/Min altitude, Auto-accumulation (Ascent/Descent) memory) Temperature Measurement Function (Measurement range: -10 to 60°C (-14 to 140°F), 0.1°C (0.2°F) increments) Case Glass Anti-reflective coating sapphire crystal Crown Screw-lock crown Neobrite Watch Functions World Time: Displays time for 29 cities worldwide (29 time zones, with daylight saving time setting function) + UTC (Coordinated Universal Time), UTC direct recall function, home time city swap function Stopwatch (1/100-second, 24-hour counter, with split time) Timer (Set unit: 1 minute, maximum set: 60 minutes, measured in 1-second increments) 5 alarms, hourly time signal Double LED Light Dial LED light (full auto light, afterglow function, afterglow time switch (1.5 sec/3 sec)), LCD section LED backlight (full auto light, afterglow function, afterglow time switch (1.5 sec/3 sec)) Light Color LED: White Full Auto Calendar Operation Sound ON/OFF Switch Function Hand Position Auto Correction Function Power Saving Function (In dark environments, display turns off and hands stop after a set time to conserve power) Battery Indicator/Warning Battery Indicator Display Drive Time Drive time from full charge without solar power generation When functions are used: Approx. 6 months In power saving state: Approx. 25 months Accuracy *If radio wave reception is unavailable, it operates with standard quartz accuracy (average monthly deviation ±15 seconds). Other 12/24-hour format switch Hand retraction function (manual, automatic (during altitude, barometric pressure, temperature measurement)) Time correction details Home time city (cities supported by reception function) / Reception radio waves Tokyo / Japan's standard radio waves JJY40・JJY60 (Honolulu), (Anchorage), Los Angeles, Denver, Chicago, New York / U.S. standard radio wave WWVB London, Paris, Athens / UK standard radio wave MSF・German standard radio wave DCF77 Hong Kong / China's standard radio wave BPC ※Cities in parentheses may receive signals under favorable conditions. Radio Reception Function: Auto Reception (max. 6 times/day) (China signals max. 5 times/day) / Manual Reception Reception Signal: JJY, Frequency: 40kHz / 60kHz (Fukushima/Kyushu dual-station compatible model) Reception Signal: WWVB, Frequency: 60kHz ＜Europe＞ Reception Signal: MSF/DCF77, Frequency: 60kHz / 77.5kHz ＜China＞ Reception Signal: BPC, Frequency: 68.5kHz *When the home time setting is configured for a city with reception capability, the watch will receive the signal from the corresponding station. The time zone difference is set based on the selected city. Sensor Function Details ※ The altimeter is a relative altimeter that converts barometric pressure changes into altitude. When barometric pressure changes due to weather conditions, the measured altitude value also changes. ※ When measuring the outside temperature, remove the watch from your wrist to avoid the effects of body heat, sweat (water droplets), direct sunlight, etc.