This is a model from the G-Shock Mudmaster Series, designed for use in extreme environments scattered with rubble, dirt and debris, and uses carbon materials. The use of high rigidity carbon on the case keeps damage and deformation at bay, and ensures a high level of airtightness and shock resistance. This model also features a filter that protects against the invasion of mud, a stainless steel panel back, and a back cover made of shock-resistant fine resin embedded with glass fibers, giving it a high level of resistance to dust and mud. The bezel also uses three layers of fine resin with carbon fiber inserts and is designed to resemble a portable gasoline can that could be found on off-road vehicles. Function-wise, this model comes with compass, altimeter/barometer, temperature reader and pedometer. In addition to being able to easily correct the time using the dedicated G-Shock app, there are lots of other useful features including the Mission Log feature, which automatically records in the app altitude data obtained from the watch and route data obtained by your smartphone. This is a toughness watch that supports you in taking quick decisions and accurate actions. Shock Resistant If the watch is dropped, the protruding bezel fully enclosing it absorbs the shock, protecting the buttons directly connected to the module and alleviating shocks from all directions. The bezel also guards the surface of the crystal. Digital Compass Measures and displays direction as one of 16 points - Measuring range: 0 to 359° - Measuring unit: 1° - 60 seconds continuous measurement - Hand indication of north - Magnetic declination correction. Thermometer Display range: -10 to 60℃ (14 to 140℉) - Display unit: 0.1℃ (0.2℉) *Changeover between Celsius (℃) and Fahrenheit. Altimeter Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft.) - Measuring unit: 1 m (5 ft.) - Hand indication graph of altitude differential - Manual memory measurements (up to 14 records, each including altitude, date, time) Barometer Measuring range: 260 to 1,100 hPa (7.65 to 32.45 inHg) - Measuring unit: 1 hPa (0.05 inHg) - Hand indication of pressure differential (±10 hPa) - Atmospheric pressure tendency graph (last 20 hours or last 56 hours) Mud Resistant This model features a filter that protects against the invasion of mud, rubble, dirt and debris. Smartphone Link Coordination with a smartphone using Bluetooth communication realizes timekeeping accuracy and easy operation simultaneously. Download the G-Shock MOVE app to control watch settings, manage workouts, and check activity history. Water Resistant While being water resistant to 200 meters, You can wear your G-SHOCK in all sorts of situations, from working with water in daily life and taking a shower to participating in water activities such as swimming, surfing or jet skiing. Stopwatch 1/100-second stopwatch. Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes) 1:00'00~23:59'59 (after 60 minutes) Countdown Timer Timer for interval measurement (up to five time settings). Measuring unit: 1 second - Input range: 00'00'' to 60'00'' (1-second increments) Double LED Light LED light for the face (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow). LED backlight for the digital display (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) World Time 38 time zones (38 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping Sunrise / Sunset Display Sunrise time and sunset time for specific date, daylight pointers.