3rd Generation Skyhawk Atomic Flight Chronograph. Atomic time keeping. Time is automatically set (or on demand) by the atomic signal. Anodized Stainless Steel Case and bracelet. Eco drive technology charges in sunlight or indoors with 6 month power reserve. Power reserve indicator with low charge warning. World Time with 43 cities. 2 World time Alarms 1/100 Second Chronograph Measures up to 24 Hours 99 Minute Countdown Timer Perpetual calendar. Greenwich Mean Time (GMT) display. Black dial with silver tone hands and markers. Digital display. Digital display back-light. Luminous hands and markers. Rotating Slide Rule Bezel. Non-reflective scratch resistant mineral crystal. Push-button deployment clasp. Water resistant to 200m. Case measures 45mm diameter by 15mm thick. Flight watch.