The G-Shock MASTER OF G MUDMASTER Twin Sensor GG1000-1A is a rugged timepiece designed for the toughest adventures. With a sturdy 56.2 × 55.3 × 17.3mm case featuring a combination of resin and stainless steel, and weighing 94g, it's mud and shock-resistant, with a water resistance of 200 meters. Powered by SR927W X 2 batteries, it lasts approximately 2 years. Key features include a digital compass with hand indication of north, bidirectional calibration, thermometer, world time, stopwatch, timer, and 5 daily alarms with a snooze option. With LED backlighting, full auto-calendar, mute feature, and battery alerts, it offers both analogue and digital displays in 12/24-hour formats, ensuring accurate timekeeping in any situation. - 56.2 × 55.3 × 17.3mm Case Size - 94g Weight - Resin/Stainless steel Case and Bezel - Resin Band - Mud Resistant - Shock Resistant - 200 Meters Water Resistant - Approx. battery life: 2 years on SR927W X 2 - Sensor feature: Digital compass (NORTH) Hand indication of north (20 seconds continuous measurement) *Measures and displays direction as one of 16 points *Measuring range: 0 to 359° *Measuring unit: 1° - Bidirectional calibration - Magnetic declination correction - Bearing memory - Thermometer *Display range: -10 to 60℃ (14 to 140℉) *Display unit: 0.1℃ (0.2℉) - Mineral Glass - World time: 31 time zones (48 cities + coordinated universal time), daylight saving on/off - Stopwatch - Timer - Alarm/hourly time signal: 5 daily alarms (with 1 snooze alarm) - LED backlight (Super Illuminator) Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow - Calendar: Full auto-calendar (to year 2099) - Mute feature: Button operation tone on/off - Battery display/alert - Low battery alert - Accuracy: ±15 seconds per month - 12/24-hour format - Regular timekeeping: *Analog: 3 hands (hour, minute (hand moves every 10 seconds), second) *Digital: Hour, minute, second, pm, month, date, day