From super-tough G-SHOCK comes a new drop of the GA2100RL-1A Watch that features a bio-based bezel, mineral glass face, and is shock resistant with carbon core guard structure for extra durability. What more could you want? Cop yours today! - Mineral Glass - Bio-based resin band - Shock Resistant - Carbon Core Guard structure - 200-meter water resistance - Case / bezel material: Carbon / Bio-based resin - LED backlight - Measuring unit: 1/100 second (for the first 60 minutes) - 12/24-hour format - Regular timekeeping - Full auto-calendar (to year 2099) - Countdown timer - Approx. battery life: 3 years on SR726W X 2 - Size of case: 48.5 × 45.4 × 11.8 mm - Total weight: 51 g - Colour: Black - Style: GA2100RL-1A