Marine Tourbillon hight jewellery chronograph in 18-carat white gold. Hand-wound mechanical movement. Balance-spring, lever and escape wheel in silicon. Bezel, caseband, lugs, push-pieces and crown set with 186 baguette-cut diamonds (11.77 carats). Dial in silvered 18-carat gold, hand-engraved on a rose engine and set with 132 diamonds (0.35 carat). Chapter ring with applied Roman numerals and luminous dots. 30 minutes totaliser at 3 o'clock. 12-hour totaliser at 6 o'clock. Running seconds on the part-titanium tourbillon carriage, at 12 o'clock. Marine folding clasp in gold set with 58 diamonds (0.23 carat).
The tourbillon, A.-L. Breguet's historic invention patented in 1801, was conceived to compensate for rate errors resulting from the effect of gravity on the moving parts.
Breguet developed in 1820 an observation chronometer. It permitted the precise measurement of intermediate periods, thus anticipating the modern chronograph.
Reference 5839BB/6D/9ZU DDOD
|Material :||White gold|
|Case thickness (mm) :||14.05|
|Case dimension (mm) W :||43.00|
|Water (m) :||30|
|Powers (hours) :||50|
|Frequency (Hz) :||3.0|
|Balance-spring :||Flat / Silicon|