CASIO G-SHOCK GGB100Y-1A

MASTER OF G - LAND MUDMASTER  GGB100Y-1A   Case and bezel material Case / bezel material: Carbon / Resin　 Band Resin Band Construction Shock Resistant Mud Resistant Carbon Core Guard structure Water resistance 200-meter water resistance Power supply and battery life Approx. battery life: 2 years on CR2025 Smartphone Link feature Mobile link (Wireless linking using Bluetooth®) Timer Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 second to 24 hours (1-minute increments and 1-hour increments) Light 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 World time 38 time zones (38 cities + coordinated universal time), daylight saving on/off, Home city