In 1795, Breguet conceived the “Breget overcoil” spring, today still the reference in terms of balance springs. In 2006, Breguet introduced its first wristwatches with silicon balance spring and escapement. Today, the new Breguet silicon balance spring is featured in the Breguet Tradition 7047 model with tourbillon and fusee-and-chain transmission. Inspired by the design of the first tourbillon-equipped pocket watches devised by Breguet, a platinum version is now available fitted with a movement fashioned in an anthracite-toned metal alloy.
The fusee-and-chain transmission connected to the barrel ensures constant force for as long as the watch is running. A number of patents applications involve the large tourbillon resonator at one o’clock on the watch face, one for a titanium balance and three relating to Breguet silicon balance springs. A further patent was awarded for a power-reserve indicator positioned directly on the barrel.
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BREGUET TRADITION : FUSEE TOURBILLON TIMEPIECE WITH BREGUET OVERCOIL IN SILICON
DESCRIPTION OF THE WATCH
Case: round in 950 Platinum with finely fluted caseband. Sapphire caseback. Diameter: 41 mm. Rounded horns welded to the case, with screw pins securing the strap. Water-resistant to 3 bar (30m). Dial in silvered 18K gold, hand-engraved on a rose engine off-centered at 7 o’clock. Individually numbered and signed Breguet. Chapter ring with Roman numerals. 60-second tourbillon positioned at 1 o’clock. Open-tipped Breguet hands in polished steel.
Movement: hand-wound mechanical movement clad in an anthracite gray alloy of platinum-group metals, with tourbillon regulator. Numbered and signed Breguet. Cal. 569. 16 lignes, 43 jewels, 2.5-Hz frequency. Power reserve of 50 hours with power reserve indication on the barrel drum. Torque regularity throughout the operation of the watch provided by fusee-and-chain transmission. Upper bridge of the tourbillon carriage in titanium. Breguet-shaped thin bar (barrette) in nonmagnetic stainless steel. Straight-line lever escapement. Breguet balance in titanium with four adjustment screws in gold. BREGUET balance spring in silicon. Adjusted in 6 positions.