A. Lange & Söhne
Datograph Up/Down
Ref. 405.035
Popularly known as "Datograph Up/Down Platinum"
The Datograph Up/Down is A. Lange & Söhne's flagship flyback chronograph, celebrated for its clear, asymmetric dial and in-house manufacture movement. The 405.035 in 950 platinum pairs a black solid-silver dial with the signature outsize date at 12 o'clock, a precisely jumping minute counter, a power-reserve indicator, and a subsidiary seconds dial, all driven by the hand-finished Calibre L951.6.
Technical Specifications
Case Diameter
41 mm
Case Height
13.1 mm
Case Material
950 platinum
Movement
Calibre L951.6, Manual-winding
Power Reserve
60 hours
Functions
Hours, minutes; subsidiary seconds; flyback chronograph with precisely jumping minute counter; outsize date (Grosse Datum); UP/DOWN power-reserve indicator; stop-seconds mechanism
Finishing
Hand-finished German silver movement plates, blued steel screws, polished gold chatons
Dial
Black solid silver with silver-coloured sub-dials
Crystal
Sapphire crystal (front and exhibition case back)
Water Resistance
3 bar (30 m)
Strap
Black alligator leather with platinum pin buckle
Pre-Owned & Secondary Market
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