Genuine Italian-made 31 Jewel automatic movement Solid, high quality 440 stainless steel Exclusive 'hacking' signal on movement - second hand stops sweeping when you pull the crown One-piece solid screw down crown with Rolex engraving Solid screw-down back with green Rolex hologram sticker The back of all watches can only be opened with a genuine Rolex tool Fully functional day, date, and time mechanisms "on all Presidential's and Masterpiece" There are no holes in the side of the lugs, just like the real thing On 2-tone models, the gold goes through the clasp, just like the real thing Genuine Sapphire Crystal 100% exact markings and engravings on face, band, crown, and case Perfect weight and feel Water resistant to 30m - rubber seals around the crown and back of watch to keep the water out Serial and Model Numbers engraved between the lugs - only GENUINE Italian-made replicas have them! All diamond markers are high quality moissanite markers Bands are linked by threaded screws, not pins No one can ever tell the difference!