The ZEITWERK MINUTE REPEATER is the first A. Lange & Söhne model with a striking mechanism that sounds the hours, ten-minute intervals, and minutes. The acoustic sequence precisely reproduces the digitally displayed time whenever the striking mechanism is triggered with a pusher.

Technical details
Model: ZEITWERK MINUTE REPEATER (Ref. 147.025F)

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 dimensions - Diameter: 37.7 millimetres; height: 10.9 millimetres
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, striking mechanism with decimal minute repeater

Operating elements
Crown for winding the watch and setting the time; pusher for activating the striking mechanism

Case
Platinum
Diameter: 44.2 millimetres; height: 14.1 millimetres
Crystal and back: Sapphire crystal (Mohs hardness 9)

Dial
Solid silver, rhodié
Time Bridge: Black rhodiumed German silver
Hand: Rhodiumed gold

Strap
Hand-stitched alligator leather strap, black
Buckle: Lange deployant buckle in platinum

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