Patek Philippe Nautilus 5726/1A-014 Stainless Steel

Blue, black gradated, gold applied hour markers with luminescent coating.
Steel.
Case diameter (10-4 o’clock): 40.5 mm. Height: 11.3 mm.
Water-resistant :yes.
Screw-down crown.
Sapphire crystal case back.
Steel. Patented fold-over clasp with lockable adjustment system.