An unexpected 12-sided bezel lends a dash of extra style to this 3-hand… Citizen Eco-Drive in stainless steel two-tone with 27mm screw-back case. Additional features include day-date indicator set within a white dial, luminous hands, water resistance to 100 meters, and foldover clasp with push button. Featuring our Eco-Drive technology ? powered by light, any light. Never needs a battery. Caliber number E001.