Patek Philippe Complication 18K Gold Men's Watch. Reference : 5146J-010. Case: 18K Yellow gold 39mm. Movement: Automatic Caliber 324 S IRM QA LU. Dial: Grey with Arabic numbers. CRYSTAL / GLASS: Sapphire crystal. Bracelet/Strap: Brown Leather with Yellow gold folded clasp. POWER RESERVE: 35-45 hours. Comes with Box and Watch certificate, 1 year warranty.