Citizen Men's AT0270-00E Eco-Drive 180 WR100 Chronograph Watch Light powered Eco-Drive Japanese-quartz movement; Charges in natural sunlight or indoor light Polyurethane rubber strap Chronograph functions with 24-hour, 60-minute, and 60-seconds subdials Date calendar feature; Luminous hands and markers Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving