A unique timepiece for the moment and for eternity, this A. Lange & Sohne Datograph Perpetual combines two classic complications – the chronograph (for short time measurements) and the perpetual calendar - in one landmark 18K white gold case with a round bezel and a gray dial. The watch features a sapphire crystal over the dial, and a sapphire crystal exhibition caseback to allow viewing of the hand-finished Calibre L952.1. manually wound Lange movement. The watch's strap is black hand-stitched crocodile with leather with an 18K white gold ardillon buckle
