Adventure to new heights with the Citizen Ecosphere. A black on black sleek sporty timepiece featuring a 1/5-second chronograph measuring up to 60 minutes, 12/24-hour time and date. A stainless steel case with black polymatte finish, black polyurethane strap and black dial. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number B620.