June 12, 2017: A. Lange & Söhne is presenting a new version of the 1815 Chronograph with a stopwatch function. The watch features a power reserve of 60 hours, and a pulsimeter scale on the outer ring of the dial to determine heart rates. The newest edition includes a white-gold case with a black dial, a black alligator leather strap and solid white-gold Lange prong buckle, as well as a sapphire-crystal case back.
