MASTER OF G MUDMASTER This G-SHOCK "Mudmaster" series model, designed for extreme land use in environments with piles and scattered rubble and debris, utilizes carbon fiber as its material. The case uses high-rigidity carbon fiber to suppress damage and deformation, ensuring high airtightness and shock resistance. In addition, it is equipped with a filter to prevent mud intrusion, a stainless steel panel back, and a shock-resistant glass fiber-reinforced fine resin back cover, providing high dust and mud resistance. The bezel also employs a three-layer structure with a carbon fiber sheet inserted into fine resin, resulting in a design that mimics a gasoline can mounted on an off-road vehicle. In terms of functionality, it can measure direction, altitude/barometric pressure, temperature, and steps. It also features several useful functions, including easy time correction via a dedicated app, and a "Mission Log function" that automatically records altitude acquired by the watch and route acquired by a smartphone in the app. This is a tough watch that supports quick decision-making and accurate action. Product Specifications Brand Name CASIO / G-SHOCK Manufacturer Part Number GG-B100-1BJF Case Size (H x W x D) 55.4 × 51.3 × 19.4 mm Weight 92 g Case/Bezel Material Carbon/Resin Band Resin Band Construction Shock-Resistant Construction (Shock Resist), Dust- and Mud-Resistant Construction (Mud Resist), Carbon Core Guard Construction Water Resistance 20 Bar Water Resistance Time Adjustment Bluetooth: Connects to a smartphone to automatically adjust the time Battery Life Approx. 2 years Sensor Functions Altitude measurement (–700 to 10,000 m), altitude memory, automatic recording, trend graph, difference indicator, measurement interval setting (5 seconds/2 minutes) Barometric pressure measurement, trend graph, information alarm, display in 0.1 hPa increments Compass (16 directions, angle, continuous 60 seconds, correction function) Step counter (0–999,999 steps), power-saving function Temperature measurement (–10 to 60°C) Mobile Link Function Function linkage via Bluetooth communication Compatible App CASIO WATCHES App Integration Features Automatic time correction, easy watch setup, world time for approx. 300 cities, life log, mission log, location indicator, location memory, mode customization, automatic altitude correction, cell phone finder Glass Inorganic glass (spherical/curved glass) Other Exterior Features Neobrite World Time 38 cities worldwide + UTC display, automatic daylight saving time setting, home time swap Sunrise/Sunset Sunrise and sunset time display Stopwatch 1/100-second (less than 1 hour) / 1-second (1 hour or more), 24-hour timer, with split times Timer Up to 24 hours, set in 1-minute increments, measured in 1-second increments Alarm 5 time alarms, hourly chime Light Double LED light: ・For dial: Auto light, Super Illuminator, afterglow 1.5/3 seconds ・For LCD: Auto light, Super Illuminator, afterglow 1.5/3 seconds Light Color LED: White Calendar Full auto calendar Beep Sound Switch ON/OFF switch function available Accuracy Average monthly deviation ±15 seconds (*When not paired with a smartphone) Other Functions 12/24-hour format switch, hand retreat function Precautions The altimeter displays relative altitude based on barometric pressure changes. Errors may occur depending on weather conditions. When measuring temperature, avoid exposure to body heat, direct sunlight, etc. The barometric pressure difference indicator can be set to display in 0.1 hPa increments. "IMPORTANT" Customs and taxes: Your country of residence may apply additional customs duties and import taxes. Please check the laws of your country before bidding. We cannot be held responsible for any expenses incurred for importing items into the purchaser's country of residence. If the winning bidder decides to cancel or withdraw, they will bear all risks, shipping costs, and return import duties.