Dynamic, up-to-the-minute style and performance from the Citizen Eco-Drive collection...introducing the new Largo men's perpetual calendar alarm chronograph in stainless steel. An ultra-sleek, modern profile matched to the very latest technology. Outstanding watch is powered by the sun or any other light source...and will never require a new battery. Handsome brushed and polished steel tank case is presented on the striking brushed steel bracelet with polished steel accent links. Polished steel bezel frames the blue dial with three subdials, luminous hands and markers. Chronograph measures 1/20th of second intervals up to 60-minutes, has 12-hour and alarm registers. A window at the 4 o'clock hour reveals the automatic date calendar. Perpetual calendar automatically adjusts for odd and even months, including leap years. Bracelet has a push-button, double locking clasp for added convenience. Water resistant to 100 meters (330 feet). Case is 35.5mm wide and 11mm thick.