The new A. Lange & Söhne model reliably tells the time around the clock, and its stop function can be used at any time as well. This is because all indications are legible even in darkness, thanks to its semi-transparent dial and luminous displays. The chronograph – with a flyback function, a precisely jumping minute counter and a power-reserve indicator – comes in a limited edition of 200 watches. 

What strikes the eye at first sight of the DATOGRAPH UP/DOWN is its vibrant and yet harmoniously balanced dial design. The characteristic outsize-date display in the framed double aperture marks the tip of an equilateral triangle. Its baseline is defined by the two subsidiary dials for the seconds and the precisely jumping minute counter. In the DATOGRAPH UP/DOWN “Lumen”, the ingenious configuration unfolds a new aesthetic dimen¬sion as soon as darkness sets in. 

This is achieved with a semi-transparent dial and a luminous compound that causes all displays to glow in the darkness – with a distinctive green hue that the human eye perceives as particularly pleasant. The hour and minute hands are filled with the luminous material; the chronograph sweep seconds hand is fully coated with the compound. The seconds hand and minute counter in blued steel revolve above subsidiary dials that are nocti-lucent, too. The minute scale, subdivided into fifth-of-a-second graduations, the concentric tachymeter scale and power-reserve arrow applique also glow in bright green. 

The new model, available in a limited edition of just 200 watches, comes in a 41-millimetre platinum case. It is worn on a black alligator leather strap with a platinum prong buckle.