Ref. 702.025, Lange movement: calibre L903.0, manually wound. The world's first and only one-minute tourbillon in a wristwatch format with fusée-and-chain transmission and additional chronograph and rattrapante functions as well as a power-reserve indicator. Plates and bridges made of untreated German silver, chronograph bridge engraved by hand. Three-part platinum case with a diameter of 41.2 millimetres, with sapphire crystal glass and caseback. Chrono push piece at 2 o'clock, zero-reset push piece at 4 o'clock, rattrapante push piece at 10 o'clock. Hand-stitched crocodile strap with solid-platinum buckle. Dial made of solid silver, argenté. Blued-steel hands, gold-plated steel chrono hand. Original limited edition: 51 platinum watches; planned re-edition: 50 watches in gold.