Technical detailsRichard Lange Tourbillon “Pour le Mérite” Ref. 761.050Movement: Lange manufacture calibre L072.1, manually wound, fusée-and-chain transmission; crafted to the most exacting Lange quality standards and largely decorated and assembled by hand; precision-adjusted in five positions; three-quarter plate made of untreated German silver; fourth-wheel bridge engraved by hand
No. of movement parts: 351 (without chain); chain parts: 636
Jewels: 32, of which one diamond endstone
Screwed gold chatons: 3
Escapement: lever escapement
Oscillation system: shock-resistant Glucydur® screw balance*, superior-quality balance spring manufactured in-house, frequency 21,600 semi-oscillations per hour
Power reserve: 36 hours when fully wound
Functions: time display in hours, minutes, subsidiary seconds; one-minute tourbillon with patented stop seconds; pivoting dial segment
Operating elements: crown for winding the watch and setting the time
Case dimensions: diameter: 41.9 millimetres; height: 12.2 millimetres
Movement dimensions: diameter: 33.6 millimetres; height: 7.6 millimetres
Glass and caseback: sapphire crystal (hardness 9)
Edition: 15 watches
Case: honey-coloured gold
Dial: solid honey-coloured gold, engraved by hand
Hands: gold
Strap: hand-stitched crocodile strap, red-brown
Buckle: Lange deployant buckle in solid honey-coloured gold
*Lange Uhren GmbH is not the owner of the Glucydur® trademark
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