Casio G-Shock x GA-1100 Series ft. Master Of G aka Gravitymaster Men Sports Round 200m Water Resistant Watch GA-1100-2A GA1100 GA-1100 Built for pilots, the Casio G-Shock GA-1100 Gravitymaster features Twin Sensor technology with a digital compass and thermometer. The analog-digital display includes a world time function with 31 time zones and 5 daily alarms. Housed in a 50.8mm resin case with spherical mineral glass, it offers shock resistance, 200m water resistance, Super Illuminator LED backlight, and Neobrite luminous hands. Module / Movement 5441 (quartz) Battery Life / Accuracy Approximately 2 years (+/-15 seconds per month) Crystal Mineral crystal (curved) Light LED light (super illuminator, auto light switch, selectable illumination duration, afterglow) Case / Band Material Resin / stainless steel case with resin band Water Resistance 200m / 20 bar Case Size Thickness: 16.9 mm Diameter: 52.1 mm Length: 50.8 mm Lug width: Integrated Other Specifications Casio G-Shock x GA-1100 Series ft. Master Of G aka Gravitymaster Shock resistant World time (31 time zones, daylight saving on/off) 1/100-second stopwatch (up to 60 minutes, elapsed time, split time) 1-second countdown timer (up to 60 minutes) 5 daily alarms Hourly time signal Full auto-calendar (to year 2099) Button operation tone on/off 12/24-hour format Hand shift feature (hands move out of the way to provide an unobstructed view of digital display contents) World time hour and minute Regular timekeeping (analog-digital display) Enhanced Features and Functions Compass function (0° to 359°) Thermometer (-10°C to 60°C)