Tourbillons were created to improve accuracy, but their beauty has often overshadowed the original purpose in modern watches. A. Lange & Sohne seeks to correct this with a new 1815 Tourbillon, this time using two of the brand’s patented mechanisms: stop-seconds (also known as hacking seconds) and zero-reset – a first for the brand. When the crown is pulled, the former halts the balance while the latter sends the seconds hand back to zero, allowing you to set the time with one-second accuracy.

The Saxon watchmaker doesn’t often make tourbillons as a standalone complication, so the one here is understandably eye-catching, taking up a good chunk of the dial with its 13.2mm size. The arbor also carries the subsidiary seconds hand, matching the blue of the hours and minutes and standing out beautifully against the silver dial. If you admire it from the back, you’ll see a diamond endstone where a ruby usually is.

All this is possible, thanks to the new in-house L102.1 movement. It contains 262 parts, beats at 3Hz and has a power reserve of 72 hours. This model will be made in pink gold, and available in 100 limited platinum editions.