The Classique Tourbillon Extra-Plat Automatique from Breguet contains one of watchmaking’s most spectacular inventions inside its platinum case: an off-centre tourbillon with titanium cage whose realisation is protected by several patents. Incorporating a silicon balance spring and an escapement in silicon and anti-magnetic steel, the 581DR calibre beats at a frequency of 4 Hz, a rarely achieved feat for this type of complication. Despite being one of the thinnest timepieces in the world, this automatic tourbillon delivers an impressive 90 hours of power reserve, thanks to a patented “high energy” barrel.
SPECIFICATIONS
CASE
Platinum, 42 mm
Fluted caseband
Sapphire back
Water-resistant to 30 metres (3 ATM / 100 ft)
DIAL
Silvered 18K gold
Hand-guilloché with four different patterns
Small seconds on the tourbillon
Power-reserve indicator between 8 and 9 o'clock
MOVEMENT
Extra-thin mechanical automatic with tourbillon, 581DR calibre, 3 mm high, 4 Hz, 42 jewels, 90-hour power reserve
FUNCTIONS
Hours, minutes, small seconds, power-reserve indicator
BRACELET/STRAP
Leather with triple-blade clasp
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