The Patek Philippe Nautilus 5167A-001 featuers a stainless steel case and a 'tropic' style rubber strap. It is powered by the self-winding caliber 324 S C. Reference 5167/1A-001 is similar yet fitted with a stainless steel bracelet. It is also available in rose gold. Mechanical self-winding movement Caliber 324 S C Aquanaut extra large Sweep seconds hand Embossed black dial, gold applied numerals with luminescent coating “Tropical“ composite black strap Fold-over clasp Screw down crown Sapphire-crystal case back Water resistant to 120 m Stainless steel Case diameter (10-4 o’clock): 40 mm