Bold stainless steel watch with textured black dial, date window and hand markers 44mm stainless steel case with mineral dial mirror finish. To clean metal, plastic or rubber straps, wash away dirt with water. Use a soft brush to remove dust and dirt from the gaps in the metal strap. Japanese quartz movement with analog display. To fully charge the rechargeable battery, it is recommended to expose the dial to direct sunlight. Fluorescent lighting or indoor lighting does not provide enough illumi