Citizen Men's AT2185-06E Drive from Citizen Eco-Drive WDR 3.0 Chronograph Watch. Citizen Eco-Drive is fueled by light, any light, so it never needs a battery. Black ion plated stainless steel case with orange accents. 60 minute chronograph. Drive "D" logo on crown. 12/24 hour time. Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving.