Cal.4R36 automatic winding mechanism or pick up the winding via the crown. Window showing date at 3 o'clock. Reservation of the yard for up to 41 hours. Lumibrite glows clear even at low light. Stainless steel case. Strong and durable, equipped with nylon straps. Hardlex Crystal dial. Case size 40 millimeters. Thickness 11.52 mm. Waterproof performance of 100 meters