Citizen Eco-Drive Scuba Fin is a perfect choice for divers as well as active sports consumers. Features include a one-way rotating elapsed-time bezel, 46mm screw-back case and screw-down crown, 200M WR, and luminous hands and markers. Shown in stainless steel with black poly strap with buckle and bold green accents. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number E168.