A fine early 19th-century Swiss duplex watch made for the Chinese market, housed in a gold and enamel open-face case. The key-wound gilt bar movement features a richly engraved top plate, bridges, and a suspended going barrel, together with a polished steel regulator and blued steel stop-work and screws. It is fitted with a polished steel three-arm balance carrying three blued steel affixes and a spiral hairspring. The crab-tooth duplex escapement employs a steel escape wheel with two locking teeth, giving the watch the appearance of beating true seconds.

The white enamel dial displays two time zones on subsidiary dials, both with Roman numerals. Seconds are shown both as centre seconds and on a subsidiary seconds dial, with a blued steel seconds hand and gilt Breguet-style hands.

The large gold open-face case is decorated on the reverse with a fine polychrome enamel scene depicting a classically dressed couple and child. The gold bezel is enriched with translucent red, white, and blue champlevé enamel, complemented by a matching gold and enamel pendant and bow. The movement is protected by a glazed cover with a sprung, engraved gilt bezel.