Citizen BU4027-88L Men’s Eco-Drive Stainless Steel Bracelet Watch. Eco-Drive movement (recharged by any light source, no need to change battery). Accuracy of +- 15 seconds per month. 6 month Eco-Drive power reserve. Caliber 8725. Stainless steel case. Stainless steel bracelet. Blue dial with luminous hands and markers. Day and date display. Hardened mineral crystal. Water resistance: 100-meters. Approximate case diameter: 42mm. Approximate case thickness: 12mm.