Citizen BJ7085-50E Men’s Eco-Drive GMT Black Ion Plated Stainless Steel Bracelet Watch. Eco-Drive movement (recharged by any light source, no need to change battery). Caliber B877. Black ion plated stainless steel case. Black ion plated bracelet. Black dial. Date display at 4 o’clock position. GMT feature with inner rotating ring displaying the 2nd time zone. Hardened mineral crystal. Water resistance: 200-meters. Approximate case diameter: 46.5mm. Approximate case thickness: 13mm.