The Drive from Citizen collection. A collection of watches with simple classically modern design, all powered by Eco-Drive Technology. Watches powered by any light and never need a battery change. Featured here in a stainless steel case, black polyurethane strap with bright green accents and matching black dial, chronograph, 12/24-hour time and date. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number B612.