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Ref. 147.025F / Techincal Specs

Movement
Lange manufacture calibre L043.5, manually wound, crafted to the most exacting Lange quality standards, decorated and assembled by hand; precision-adjusted in five positions; three- quarter plate made of untreated German silver; balance cock engraved by hand; constant-force escapement
Movement parts
771
Jewels
93
Screwed gold chatons
3
Escapement
Lever escapement
Oscillator
Shock-resistant balance wheel with eccentric poising weights; balance spring manufactured in-house, frequency of 18,000 semi-oscillations per hour; precision beat adjustment system with lateral setscrew and whiplash spring
Power reserve
36 hours when fully wound if the striking mechanism is not activated
Functions
Time display in hours and minutes with precisely jumping numeral discs, subsidiary seconds with stop seconds, power- reserve indicator, decimal minute repeater
Operating elements
Crown for winding the watch and setting the time; pusher for activating the striking mechanism
Case dimensions
Diameter: 44.2 millimetres; height: 14.1 millimetres
Movement dimensions
Diameter: 37.7 millimetres; height: 10.9 millimetres
Crystal and back
Sapphire crystal (Mohs hardness 9)
Case
Platinum
Dial
Solid silver, rhodié
Time bridge
Black rhodiumed German silver
Hands
Rhodiumed gold
Strap
Hand-stitched alligator leather strap, black
Buckle
Lange deployant buckle in platinum