The 1815 Chronograph by A. Lange & Söhne might be their best definition of a chronograph, in its purest form. While the icon remains the Datograph Up/Down, it features several additional complications, such as the large date and the power reserve. The 1815 is as pure as you can imagine. Back in 2015 though, the German manufacture updated a bit the model, with the addition (or the comeback) of the pulsometer scale, with the stunning boutique edition. It is this same edition that is today presented in a very Monochrome-style, with the A. Lange & Söhne 1815 Chronograph Black Pulsometer Dial.
