A. Lange & Söhne Langematik Platinum 351.025

Lange introduced the Langematik in 1997. Its calibre L921.2, the Sax-0-Mat, is self-winding and has a zero-reset: pull the crown and the balance stops while the seconds hand jumps back to zero, so the watch can be set to the second. The dial pairs gold indexes with a single numeral at 12.

It is 8.2 mm thick, 1.5 mm slimmer than the Langematik Big Date (308.027 in white gold, 308.021 in yellow gold), which adds a large date in a 37 mm case 9.7 mm thick. The yellow gold Langematik 301.021 comes with a white dial and the white gold 301.027 with a black one, both in the same 36.8 mm case. The Anniversary Jubilee (302.025) is a 37 mm platinum version with an enamel dial, limited to 500 pieces.