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Histoire de Tourbillon 4

Harry Winston 2013

Histoire de Tourbillon 4

With hours, minutes and power reserve displayed in separate subdials, this Histoire de Tourbillon 4 of course gives pride of place to the complication which Abraham-Louis Breguet patented in 1801. All the more so as Harry Winston has chosen a tri-axial tourbillon whose carriages, positioned at different angles, rotate each at their own speed. This mechanical ballet is enthroned at 6 o’clock under a sapphire crystal dome, giving this watch its full force. Limited edition of 20.

Movement | hand-wound HW4501calibre, 345 parts, twin barrels, 21,600 vibrations/hour frequency, 50-hour power reserve, 40.40 mm ø, 17.30 mm high

Functions | hour and minute counters, Tri-Axial Tourbillon, inner carriage containing the balance and escapement pinion rotating in 45 seconds, intermediate carriage rotating in 75 seconds, outer carriage rotating in 300 seconds with corresponding indication, power-reserve display

Dial | three-dimensional, black gold finish, open to show the movement

Case | 18k white gold, caseband in Zalium with DLC treatment, open back, 47 mm ø, 21.70 mm high, water-resistant to 30 metres