A. Lange & Söhne has unveiled a new Datograph Perpetual, pairing a platinum case and bracelet with a black dial and baguette-cut diamond hour markers. The watch arrives 20 years after the model’s debut in 2006, when it became the brand’s first wristwatch to combine a chronograph and a perpetual calendar with an outsize date.

The new design retains the collection’s familiar dial layout and manually wound movement while introducing a precious-metal bracelet and diamond details.

The watch has a 950 platinum case measuring 41 mm in diameter and 13.5 mm in height. It is paired with a five-row platinum bracelet, finished with polished and matte surfaces and chamfered links. A quick-release platinum deployant buckle secures the bracelet.

The new Datograph Perpetual comes with added details to its timeless design. Eleven hand-applied baguette-cut diamonds, weighing approximately 0.13 carats in total, make for the hour markers, with a pair at 12 o’clock. The markers at 4 and 8 o’clock are omitted to make space for the slightly lowered, rhodium-coloured subdials, which stand out against the black dial. 

The craftsmanship continues inside with the manually wound L952.1 calibre, comprising 556 components, including 223 for the calendar mechanism. Assembled twice, the movement combines different materials and traditional finishing techniques to create a rich play of colours. 

The sapphire-crystal caseback reveals the chronograph mechanism, whose column wheel coordinates its operations through various rockers and levers. The elongated levers allow room for the outsize date and slightly lowered subdials. 

The chronograph and perpetual calendar come together and work in harmony through exceptional technical skill and careful adjustment. With a limited 50 watches, each with an engraved edition number.