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Speak To A Specialist1300 808 135

1815 COMPLICATIONS COLLECTION
TOURBOGRAPH PERPETUAL

Model Number : 706.025 LIMITED TO 50 PIECES

1815 COMPLICATIONS COLLECTION
TOURBOGRAPH PERPETUAL

Model Number : 706.025 LIMITED TO 50 PIECES

1815 COMPLICATIONS COLLECTION
TOURBOGRAPH PERPETUAL

Model Number : 706.025 LIMITED TO 50 PIECES

TOURBOGRAPH PERPETUAL

The fifth masterpiece in A. Lange and Söhne’s “Pour le mérite” series combines the fusée-and-chain transmission with a tourbillon, a chronograph, a rattrapante function and a perpetual calendar. The combination of these five complications makes the Tourbograph Perpetual “Pour le mérite” a peerless timepiece.

Brand : 1815 COMPLICATIONS COLLECTION
Model Number : 706.025 LIMITED TO 50 PIECES
Material : 950 PL
Movement : Lange Manufacture, mechanical, manually wound, 3Hz
Calibre : L133.1
Crystal : sapphire crystal on both sides
Case Dial : 43mm Ø, Argente dial, Blued hands, Arabic numerals, minute track
Functions : Bezel: 950P PL / Crown: 950 PL. Central hour, minutes and seconds hands; fusée-and-chain transmission with a tourbillon, a chronograph, a rattrapante function and a perpetual calendar with moon phase
Water Resistance : 30m
Bracelet Strap : Black hand-stitched alligator strap with 950PL deployant buckle
Power Reserve : ≈36 hours
Price Range : POA

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1300 808 135

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TOURBOGRAPH PERPETUAL

FEATURES & SPECIFICATIONS

The combination of a perpetual calendar with a split-seconds chronograph is
very rare.

Power management is an especially challenging undertaking. In particular, the simultaneous use of several functions calls for mechanical ingenuity, for instance when the calendar indications advance around midnight and the stopwatch function is used at the same time. Assembling such a movement requires considerable experience and exceptional sensitivity when adjusting and harmonising the mechanisms.



Via a fusée connected to the spring barrel with a chain, the force of the mainspring is delivered to the movement in constant increments thanks to the ingenious way in which the principle of levers is harnessed. A planetary gearing mechanism inside the fusée assures that the flow of power from the mainspring barrel to the escapement is not interrupted while the watch is being wound. The filigreed yet robust mechanism requires the utmost in attention as regards design, production, finissage, and assembly.

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