Case in 18-carat white gold with delicately fluted case band. Sapphire-crystal case back. 44mm diameter. Welded lugs with screw bars. Water resistant to 3 bar (30m).
Dial in silvered 18-carat gold, engine-turned and offset at 12 o'clock. Individually numbered and signed Breguet. Hours chapter with Roman numerals. Power reserve indicator at 2 o'clock and 20-minute counter at 10 o'clock. Breguet open-tipped hands in blued steel.
Hand-wound chronograph movement numbered and signed Breguet. Power reserve indicator and 20-minute counter engraved on the back of the movement. Chronograph running indicator at 6 o'clock. Cal. 580DR. 16 lignes, 62 jewels. 55 hours power reserve. Symmetrical inverted in-line lever escapements with silicon pallets. Breguet balance-wheels on Breguet springs in silicon. Movement frequency 3Hz; chronograph frequency 5Hz. The two oscillators are adjusted in six positions.
Also available in 18-carat rose gold: Reference 7077BR/G1/9XV