Casio G-Shock Mudmaster Men's Digital-Analog Watch 55mn Case Diameter Resin Bio-based Resin Band Black One Size. The watches of the G-SHOCK Master of G line developed for professionals working in the harshest environments come equipped with even tougher functionality. And the MUDMASTER takes this another step further with the ability to handle the roughest rubble and debris-strewn terrains earning the appreciation and trust of rangers and rescue teams operating in extreme environments. The MUDMASTER GGB100X employs high rigidity carbon for the carbon fiber-reinforced case to keep damage and warping at bay and ensure a tight seal and excellent shock resistance. Featuring 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 it provides a high level of resistance to dust and mud. The bezel also uses three layers of fine resin with carbon fiber inserts. The rugged design evokes the gasoline jerrycans mounted to off-road vehicles tough enough to traverse the most challenging terrain. Key components for the case and band are made with bio-based resin. Produced using renewable organic resources this material is expected to help reduce environmental impact. Practical and functional the watch is equipped with digital compass altimeter/barometer and thermometer as well as step counter. Easily correct the time using the dedicated 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. Specifications for Casio G-Shock Mudmaster GG-B100X-1A3 Men's Digital-Analog Watch: Manufacturer: Casio Application: Tactical Outdoor Gender: Male Dial Color: Black Illumination Color: White Band/Strap Color: Black Case Color: Black Battery Type: CR2025 Color: Black Fabric/Material: Resin Carbon Fiber-Reinforced Resin Case Material: Bio-based Carbon Resin Case Diameter: 55 mm Band/Strap Material: Bio-based Resin Wrist Band Type: Strap Movement: Quartz Illumination Type: Neobrite LED Water Resistance Level: Water Resistant Water Resistant Mark: 200 m Weight: 93 g Features of Casio G-Shock Mudmaster GG-B100X-1A3 Men's Digital-Analog Watch Shock Resistant Water Resistant to 200 Meters Mud-Resistant Analog-Digital Display Carbon Fiber Reeinforeced Case Digital Comapss Altimeter Barometer Thermometer Bluetooth: Connects to a smartphone and automatically adjusts the time Step Counter Mobile link (Wireless linking using Bluetooth) World Time Stopwatch Countdown Timer 5 Daily Alarms Double LED Light 12/24 Hour Formats. Package Contents: Casio G-Shock Mudmaster GG-B100X-1A3 Men's Digital-Analog Watch Casio GG-B100X-1A3: G-Shock Mudmaster GG-B100X-1A3 Men's Digital-Analog Watch 55mn Case Diameter Resin Bio-based Resin Band Black One Size