A Lange & Sohne 130.032 Lange 31 Mens Watch Watch Information

Itemnumber:		130032
Brand Name:		A Lange & Sohne
StyleNumber:		130.032
AlsoCalled:		130-032, 130.032
Series:		Lange 31
Style (Gender):		Mens
Case Material:		18k Rose Gold
DialColor:		Silver (solid)
Movement:		Manual Wind
Engine:		Cal L034.1 (21,600vph, 61 jewels, 406 parts)
Functions:		Hours, Minutes, Power Reserve, Small Seconds at 6, Outsize date
Crystal Material:		Sapphire Crystal
Case Diameter:		45.9mm
CaseThickness:		15.9mm
Caseback:		Sapphire Crystal Exhibition Back
BezelMaterial:		18k Rose Gold
BezelFunction:		Fixed
Water Resistance:		30m / 100ft (unsuitable for prolonged contact with water e.g. swimming, bathing)
Crown Material:		18k Rose Gold
Calendar:		Large two-digit date aperture at 10
PowerReserve:		744-hour power reserve (31 days)
WatchBracelet / Strap Material:		Leather - Red Brown Crocodile (hand-stitched)
WatchClasp Material:		18k Rose Gold Buckle
AdditionalInfo:		The LANGE 31 is the world's first mechanical wristwatch with a power reserve of 31 days and a constant-force escapement that powers the going train with constant torque delivery. The tremendous amount of energy needed to keep the watch running so long is transferred to the movement with a winding key and stored in a twin mainspring barrel. The Lange 31 is yet another example of A. Lange & Söhne's ability to redefine benchmarks in precision watchmaking. For an entire month, the mechanism assures the highest level of rate stability and rate accuracy. Thanks to its unmatched autonomy, the LANGE 31 offers a useful benefit – you may forget to wind it once in a while. Because even if you take the watch off, it keeps telling the right time for as long as 31 days. To emphasize this special functionality, the solid-silver dial bears the inscription Monats-Werk. Additionally, the power-reserve indicator was accorded ample space on the right-hand side of the solid-silver dial. The patented outsize date on the left-hand side harmoniously balances the face. A glance at the case back reveals another construction that is very rare in precision watchmaking the key-winding mechanism. It was explicitly designed for and matched to this watch. It allows a considerably larger winding transmission ratio than would be possible with a crown. So fewer revolutions are needed, and the energy can be built up faster and more conveniently. The key is inserted through an aperture in the sapphire-crystal caseback. Three seals between the winding mechanism and the case protect the watch against ingress of water up to a pressure of 3 bar. To prevent inadvertent over-tightening of the mainsprings, the key features an integrated torque limiter. An attempt to turn the key further - once the mainspring is fully wound - disengages the triangular toothing of two wheels inside the key and interrupts the flow of power. The L034.1 manufacture movement in the LANGE 31 is a true power pack. In a space with a diameter of 37.3 millimetres and a height of 9.6 millimetres, it stores the energy needed to keep running non-stop for 31 days. Two crucial questions had to be answered by Lange's calibre engineers: how can so much energy be stored in a movement? And, just as important: how can this energy be delivered in a controlled manner? The energy storage function is handled by the large twin mainspring barrel - two stacked spring barrels, in fact, with an inside diameter of 25 mm. They contain the two mainsprings, each of which is 1,85 meters long – five to ten times as long as the springs of conventional mechanical wristwatches. When fully wound, their combined energy is equivalent to more than 3 joules. The torque delivered by the mainspring barrel has its maximum when the spring is fully wound and then declines perceptibly as the spring relaxes. This changes the rate parameters of the movement, especially in watches with large power reserve values. To eliminate this unwanted effect in the LANGE 31, the manufactory integrated a constant-force escapement. The main element of this mechanism is a pretensioned spiral spring that is quickly re-tightened on the fly at intervals of ten seconds. During the ten seconds that follow, the energy stored in the spring is delivered to the going train in a controlled manner. The torque output is virtually constant and powers the watch uniformly throughout 31 days. Apart from its innovative technology, this movement stands out by virtue of its aesthetic appearance. It showcases everything that makes Lange watchmaking artistry so desirable: attractive traditional elements such as the screw balance, the whiplash precision index adjuster on the hand-engraved balance cock, and three screwed gold chatons. Not to mention the superb finish of all parts that is so typical for Lange.

A. Lange & Söhne was first established in 1845 by Adolph Lange in Glasshutte. The firm established itself as makers of distinctive and fine timepieces - its pocket watches were prized by European gentry. Following the Second World War, the Lange factory was seized by what was then East Germany. Walter Lange, the company's heir fled. It was only after the German reunification in 1990, that the founder's great grandson, Walter Lange, began reviving the company. With funding from LMH, the newly reformed company set out to restore its fine watchmaking tradition. The company was sold to the luxury conglomerate in July 2000. Although its watch parts may be cut with exceptional precision by the most advanced computer-aided machine tools, they are still finished, decorated and engraved by the skilled hands of some of the world's finest watchmakers.In 1994, Lange debuted what is perhaps its most iconic watch, the Lange 1 together with the Saxonia, Arkade and Tourbillon Pour le Merite series. The Lange 1 features an off-center hour and minutes dial, a sub-seconds dial and a large date. In 1997, Lange Uhren GmbH presents the Langematik to the world, impressing the watch cognoscenti. 1999 brings the Datograph to Lange's growing adherents. It sets new standards in watch finishing and timekeeping. In 2007, A Lange & Sohne presents the Lange 31, a watch featuring a 31-day power reserve with constant power output.

A Lange & Sohne 130.032 Lange 31 Mens Watch Watch Details

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A Lange & Sohne 130.032 Lange 31 Mens Watch Original Picture