Travel around the world with the newest addition to the Promaster collection. The Citizen Promaster Navihawk GPS features Satellite GPS Timekeeping technology with synchronized time adjustment available in 27 cities. Pilot's rotating slide rule bezel, chronograph, perpetual calendar, alarm, light level indicator ,dual time and black leather strap. Featuring our Eco-Drive technology powered by light, any light. Never needs a battery. Caliber number F900.