The Casio G-SHOCK MASTER OF G Series MUDMASTER GGB100-1A watch features a 55.4mm x 53.1mm black case made of carbon material. The watch is both shock and mud resistant. The black dial includes an analog and digital time display. Functions include Bluetooth connection to 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 black resin band includes a tang buckle. Water resistant to 200 meters.