The A. Lange & Söhne Datograph, a watch I am very fond of, gets some new additions for SIHH 2015, including a version of the Datograph in 18k rose gold as well as this A. Lange & Söhne Datograph Perpetual which adds a perpetual calendar to the chronograph, date, and power reserve complications. When I last visited the newer 41mm wide sized version of this German beauty, I reviewed the platinum A. Lange & Söhne Datograph Up/Down here.

A. Lange & Söhne is setting themselves up for a long line of Datograph Perpetual watches (down the line) with this 2015 version in a 41mm wide 18k white gold case and matte gray dial. Of course, the A. Lange & Söhne Datograph Perpetual doesn’t have the sublime simplicity of the original Datograph or more modern Datograph Up/Down, but it does increase the ante by adding the various calendar complications. This isn’t an entirely new movement either, but rather adapted to the needs of bringing a bit more to the popular Datograph collection.

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Why add a perpetual calendar and moon phase complication to what is arguably A. Lange & Söhne’s only sports watch? That is a good question, and one we cannot really answer, aside from saying that Lange is trying to add more variety to their most popular models. This turns the thick and large Datograph into a hefty dress watch, which is exactly what some people like. What the A. Lange & Söhne Datograph Perpetual lacks in creativity it makes up for in consumer appeal as Lange continues its trend toward being a bit more commercial and responsive in its new product releases. Nevertheless, I would happily accept an A. Lange & Söhne Datograph Perpetual in a heart beat if offered one.

Inside the watch is the in-house made in Glashutte, Germany, A. Lange & Söhne caliber L952.1 manually wound movement. With a total 556 hand-finished parts, a peek through the sapphire crystal on the rear of the case is a little bit of watch porn heaven and no one makes a movement pop quite like A. Lange & Söhne. The movement is very classic with its 18,000 bph hour frequency, versus something a bit more modern.

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The L952.1 movement is also a power hog. Despite the low frequency, the movement only has a total of 36 hours of power reserve – so it is a good thing that it has a power reserve indicator. I am not sure why there is such a low power reserve, but I can guess it is because there are so many functions and perhaps a few that “jump,” which takes even more power. The power reserve indicator is located above the left subdial – which is also used for the running seconds and the day of the week. The big date indicator is where it has always been, and the right subdial now tracks the minutes counter for the flyback chronograph, month, as well as an overlapping leap year indicator. Where the power reserve indicator sat on the Datograph Up/Down, A. Lange & Söhne has now placed a moon phase indicator.

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At 13.2mm high and 41mm wide in 18k white gold, the ref. 410.038 new for 2015 A. Lange & Söhne Datograph Perpetual will sit admirably on the wrist and really up the ante for what is already a high-end watch in the Datograph. If you are a fan of the collection but feel that adding a perpetual calendar and moon phase to the Datograph is too much, then the Datograph Rose Gold might be the model you are looking for since A. Lange & Söhne adds a higher-end as well as slightly lower-priced Datograph model for the 2015 model. The A. Lange & Söhne Datograph Perpetual will be priced at 115,800 Euros while the Datograph Rose Gold will be priced at 64,500 Euros. alange-soehne.com

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DATOGRAPH PERPETUAL Ref. 410.038 Tech Specs from A. Lange & Sohne
– Movement: Lange manufacture calibre L952.1; manually wound, crafted to the most exacting Lange quality standards, decorated and assembled by hand; precision-adjusted in five positions; plates and bridges made of untreated German silver; balance cock engraved by hand
– Movement parts: 556
– Bearing jewels: 45
– Screwed gold chatons: 4
– Escapement: Lever escapement
– Oscillator: Shock-resistant balance wheel with eccentric poising weights; balance spring manufactured in-house with a 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
– Functions: Time indicated in hours, minutes and subsidiary seconds with stop seconds; flyback chronograph with precisely jumping minute counter; tachymeter scale; perpetual calendar with date, day of week, month, moon phases and leap year; day/night indication
– Operating elements: Crown for winding the watch and setting the time, two pushers for operating the chronograph, rapid-correction pusher for collectively advancing all calendar displays, one recessed corrector each for adjusting the day of the week, the month and the moon phases
– Case dimensions: Diameter: 41.0 millimetres; height: 13.5 millimetres
– Movement dimensions: Diameter: 32.0 millimetres; height: 8.0 millimetres
– Case: White gold
– Dial: Solid silver, grey; subsidiary dials rhodié
– Hands: Hour and minute hands in rhodiumed gold, luminous; day, month and four-year hands in rhodiumed gold; chronograph sweep seconds hand, subsidiary seconds hand and minute counter hand in blued – steel
Crystal and back: Sapphire crystal (Mohs hardness 9)
– Strap: Hand-stitched alligator leather strap, black
– Buckle: Lange prong buckle in white gold

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