The Casio G-SHOCK MASTER OF G Series MUDMASTER GGB100-1A3 watch is shock and mud resistant. The 55.4mm x 53.1mm black case is made of carbon material. The black dial features analog and digital time display. Features include compatibility with the G-SHOCK connected app, a digital compass, an altimeter, a barometer, a thermometer, world time, sunrise/sunset time display, a countdown timer, five daily alarms, and a full-auto calendar. The green resin band has a tang buckle. Water resistant to 200 meters.