With the 1815 Chronograph, A. Lange & Söhne offers classicism & « Smart » mechanical measurement fonctions. I’m using the term « smart » because the calibre L951.5 or timepiece engine isn’t a simple chronograph but a Flyback chronograph. It means that the pusher at 4 o’clock allows you to jumps back to zero (automatic reset of the seconds and minute counters) and restart immediately a new measurement. The resolution is one-fifth of a second and once again, the German Maison Horlogère has chosen the best options in pretty much all areas.

Activated by the pusher at 2 o’clock, the flyback chronograph can also be used as a pulsometer. A quite old fashioned feature but nevertheless very well integrated on the dial. In fact, the dial is very challenging design-wise and to me this piece is a the perfect example of the famous « Less is more » expression.

In addition to the central time hands & flyback chronograph, a small seconds counter is present on the left (8 o’clock) and chronograph one (up to 30 minutes) on the right side.

The open back is very « Lange » obviously and to me it means that i’m going to take my magnifier in order to explore the finishing and decoration. It’s amazing how i never get tired of a Lange calibre… There always is something you missed or rediscover.

Superb Timepiece.

Congratulations! A. Lange & Söhne.


Calibre L951.5
Manual winding

Power reserve: 60 hours
Frequency: 18’000 vph
Jewels: 34
Components: 306


Diameter : 39,50 mm

Material: Pink Gold
Water resistance : 30 meters

apA. LANGE & SÖHNE, 1815