Rolex — Oyster Perpetual Air King, ref. 5500. Stainless steel case / stainless steel, black dial. Automatic movement. Case dimensions approx. 34 mm (1.3 inches) (excluding crown), wrist circumference approx. 19 cm (7.5 inches), lug width 19 mm (0.7 inches). Accessories: None. Additional details: Serial number: 5783***; Frequency: 19,800; Accuracy: -10 seconds/day (measured value) during horizontal testing.