Datograph Up/Down “Lumen” 24 hours. Infinite facets.

Limited to 200 timepieces

24 hours of inspiration. An infinite variety of perceptions. The DATOGRAPH UP/DOWN “Lumen” has more than one face. Changing with the light in the course of 24 hours, it reflects the vibrant atmosphere of every moment. From understated technicity through architectural elegance to a mysterious aura, it projects a captivating impression at any occasion – with a passion that never sleeps.

The DATOGRAPH UP/DOWN “Lumen” is the fourth model in a series of timepieces that make a bold design statement with the help of scientific knowledge. The three most prominent elements of its balanced face – the characteristic outsize date and the two subsidiary dials – form an equilateral triangle. At night, the luminous elements turn the distinctive design into an iconic beacon.

Reference 405.034

Datograph Up/Down “Lumen”The bright side of night.

Limited to 200 timepieces

Perfectly attuned to the cycle of day and night, the DATOGRAPH UP/DOWN “Lumen” displays an infinite variety of facets. With the help of scientific knowledge, it makes a bold design statement at any time of day.

What strikes the eye at first sight is its vibrant and yet harmoniously balanced dial design. The characteristic outsize date marks the tip of an equilateral triangle whose baseline is defined by the two subsidiary dials.

Reference 405.034

The “Lumen” models

“Lumen” is the name of a series of four timepieces that make a vibrant design statement with the help of the newest scientific knowledge. The first was the ZEITWERK “Luminous” launched in 2010 followed by the GRAND LANGE 1 “Lumen” and the GRAND LANGE 1 MOON PHASE “Lumen” presented in 2013 and 2016, respectively. All models were limited platinum editions and soon turned out to be coveted collectors’ items.

ZEITWERK “Luminous”

2010

GRAND LANGE 1 “Lumen”

2013

ZEITWERK “Luminous”

2010

GRAND LANGE 1 “Lumen”

2013

The technical challenge encountered in the development of the “Lumen” models was to charge the luminous elements, including those hidden beneath the dial, with light energy. The solution is a sapphire-crystal dial coated with a semi-transparent compound that is permeable to ultraviolet light.

The transmission of light waves in the visible spectrum was attenuated to achieve a high-contrast, perfectly legible dial. On the other hand, light waves in the UV range can pass through. This allows the dials of the “Lumen” models to glow in the dark for several hours.

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