Citizen Men's CA0505-57L  Eco-Drive Titanium "Nighthawk" Chronograph Watch Imported This Citizen "Nighthawk" watch features durable titanium construction and Eco-Drive technology, which powers the watch by converting light into energy, providing a timepiece that is both sleek and functional. Eco-Drive Japanese Quartz movement charges in natural or indoor light while durable mineral crystal protects the dial. Features 60-minute chronograph, date function, luminosity Water-resistant to 200 m (660 feet)