Automatic mechanical movement. Stainless steel case and bracelet. Fixed stainless steel bezel. Blue dial with luminous silver-tone hour markers, minute markers at the outer rim, and analog hands displaying hours, minutes, seconds and a date function positioned at 3 o'clock. Date display visible through sapphire crystal. Scratch resistant sapphire crystal. Screw-down winding/crown set in stainless steel. Transparent case back allowing view of movement components. Cushion shaped case measuring 40 mm diameter by 8.3 mm thickness. Fold-over clasp closure with safety release mechanism. Water resistant to 120 meters / 400 feet depth. Functions: analog hour, minute, second display and date indicator. Patek Philippe Calibre 26-330 S C automatic movement containing 30 jewels, composed of 212 parts; operates at 28800 vph (bitting frequency); offers approximately 45 hours continuous power reserve. Comes with original box, winding key, and instruction manual providing complete accessories for the watch. Belongs to Nautilus series by Patek Philippe. Luxury unisex analog Swiss Made timepiece.