The Only Watch L.U.C Engine One Tourbillon is powered by a proprietary L.U.C Calibre 1TRM ‘motor’. Machined like an engine block and mounted on silent-blocks, this mechanical hand-wound tourbillon movement was designed, developed and produced at Chopard Manufacture.
The mechanical hand-wound tourbillon movement is mounted on silent blocks – that absorb shocks – and held by three lever arms inserted into the case middle. It beats at a cadence of 28,800 vibrations per hour and boasts a 60-hour power reserve. Chronometer-certified by the COSC, this tourbillon movement drives displays of the hours, minutes, seconds and the power reserve.
In keeping with automobile traditions, the reamed engine block bears the Chopard signature: while a circular segment directly fixed to the upper face of the movement carries the power-reserve display at 12 o'clock positioned opposite the tourbillon bridge at 6 o'clock featuring a design that is a first for Chopard.
The DLC titanium case is water-resistant to 50 metres and features alternating polished and matt finishes; it also carries slightly curved lugs screwed onto the case that enhance the overall dynamic effect. Streamlined like car wings, these lugs ensure excellent wearer comfort and a perfect fit on the wrist for the opulent 35.4 x 44.4 mm case whose side is engraved with the “Only Watch 2011” mention.
The dial is also inspired by the automobile world and plays on the theme of transparency. The new Arabic numerals characteristic of the L.U.C collection and the hour-markers are engraved and yellow-tinted beneath the glare-resistant sapphire crystal. The hand-sewn black alligator leather strap setting the perfect finishing touch to this model is enhanced by four reinforced inserts evoking the seats of classic racing cars.
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