Rolex Oyster Perpetual Air-King Precision 5500 Men's Watch. 34 mm stainless steel case with a smooth bezel. Silver dial with steel hands and hour markers. Stainless steel oyster bracelet with a fold-over clasp. Will fit up to a 7-inch wrist. Mechanical hand winding movement Acrylic Crystal, Solid case back. Circa 1970. This watch is backed by our two year warranty.