Limited edition of 75 pieces world wide! The A. Lange & Sohne Richard Lange Referenzuhr watch features a 40.5mm polished 18k rose gold case and a round bezel made of same metal. A silver dial with rose gold and blued steel hands and Roman numeral hour markers. This piece is driven by caliber L033.1 manual winding movement with approximately 38 hours power reserve. Lastly, it features a sapphire-crystal glass and case back and is worn on a hand-stitched brown alligator leather strap with a tang buckle.