Adventure to new heights with the CITIZEN® Ecosphere. Our proprietary Chroma finishing adds that spark of color to this 1/5 -second chronograph measuring up to 60 minutes and 12/24-hour time. A stainless steel case with blue chroma-finish, black polyurethane strap and blue dial. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number B620.