Case in 18-carat white gold. Bezel and case band set with 131 baguette diamonds (approx. 5,59 cts). Flange set with 73 brilliant-cut diamonds (approx. 0,332 ct). Crown set with a briolette diamond (approx. 0,26 ct). Attachment paved with a frosting of 35 brilliant-cut diamonds (approx. 0,464 ct). Sapphire case back. Diameter 42,05 x 34 mm.
Dial in 18-carat gold enhanced with a frosting of 147 brilliant-cut diamonds (approx. 0,40 ct). Complication showing the day and night in the upper half, with the sun represented by the Breguet balance-wheel and a hand-engraved titanium moon, together rotating in 24 hours. Hour and minutes on the lower part. Individually numbered and signed Breguet. Hours chapter with Roman numerals and day/night indication in Breguet Arabic numerals. Breguet open-tipped hands in blued steel.
Self-winding movement. Numbered and signed Breguet. Cal. 78CS. 9 ¾ x 13 ¼ lines, 45 jewels. Power reserve of 57 hours. In-line Swiss lever escapement. Silicon balance spring. Frequency 3,5 Hz. Adjusted in six positions.
Satin strap with a triple-blade fooling clasp set with 26 brilliant-cut.