Atomic Timekeeping with synchronized time adjustment in 43 World Cities. Eco-Drive technology - runs on light never needs a battery replacement. Black ion-plated stainless steel bracelet bezel and case. Black dial with 1/100-second chronograph measures up to 24 hours. Perpetual calendar and Dual Time. 2 Alarms countdown timer and Universal Coordinated Time. Power reserve indicator. Pilot's rotating slide rule bezel. Double push button fold over closure. Lug width: 22mm. Case size: 45mm. Water resistant to 200 M. 5-Year manufacturer limited warranty.