A. Lange & Söhne - 1815 Tourbillon

The 1815 Tourbillon combines the stop-seconds system and zero reset with the device invented by Abraham-Louis Breguet, enabling stopping to the exact second and even easier adjustment. When the crown is pulled out, the balance inside the tourbillon cage stops instantly and the seconds hand jumps to zero. The watch can thus be adjusted according to a reference clock or a time signal. The 39.5-millimetre-diameter case is available in pink gold (€135,800) or platinum (the latter version in a limited edition of 100 pieces, €166,600) and the movement is manual calibre L102.1.

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