The Basics

Introduced at SIHH 2016, the Datograph Perpetual Tourbillon features a hand-wound movement with column-wheel, fly-back chronograph, a perpetual calendar and a tourbillon escapement. In its first iteration [as shown], the case is platinum and the dial black.

Brand: A. Lange & Söhne
Family: Saxonia
Reference: 740.036
Name: Datograph Perpetual Tourbillon
Produced: 2016
Limited: No

Below is a detailed look at A. Lange & Söhne’s model 740.036 from Saxonia watch family, including the price, case details and movement features.

A. Lange & Söhne Saxonia 740.036

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The Details

A. Lange & Söhne’s Datograph Perpetual Tourbillon (740.036) was originally released in 2016. This watch features a hand-wound movement beating at a frequency of 18000 bph ( 3 Hz) to provide a 36-hour power reserve when fully wound.

The Case

The platinum case measures 41.5mm in diameter and roughly 14.6mm thick, with 20mm lug width. The round case is paired with a black color dial with alpha-shaped hands, and a stick / dot hour markers and minute track, covered by a sapphire glass. A. Lange & Söhne’s Saxonia model 740.036 water resistance is not available. This does not mean this watch is not water resistant. A display caseback is over the back of the watch case.

Material: Platinum
Glass: Sapphire
Back: Display
Shape: Round
Diameter: 41.5mm
Height: 14.6mm
Lug Width: 20mm
W/R: N/A

Case Diameter

Case Thickness

Lug Width

Water Resistance

The Movement

The Saxonia 740.036 movement is a powered by caliber L952.1 made by A. Lange & Söhne. The 45-jewel hand-wound movement is 32mm in diameter. Its balance wheel oscillates at 18,000 semi-oscillations per hour or 3 Hz. This movement offers a 36-hour power reserve.

Type: Hand-Wound
Brand: A. Lange & Söhne
Caliber: L952.1
Base: A. Lange & Söhne L951.1
Display: Analog
Diameter: 32mm
Jewels: 45
Reserve: 36 hours
Frequency: 18000 bph
Time: Hours, Minutes, Small Seconds, Additional 24 Hour Hand (fixed)

The Price

How much does the A. Lange & Söhne’s Saxonia 740.036 cost? This watch was introduced in 2016 and has been in A. Lange & Söhne’s collection for around . This watch is not a limited release. As with most luxury watches, the price of depends on the availability and demand.

CURRENT PRICE: Not Available .

For more information, visit A. Lange & Söhne online.


  • Brand: A. Lange & Söhne
  • Model: Datograph Perpetual Tourbillon
  • Reference Number: 740.036
  • Limited: No

Case & Dial:

  • Material: Platinum
  • Glass: Sapphire
  • Back: Display
  • Diameter: 41.5
  • Thickness: 14.6
  • Lug Width: 20
  • Dial Color: Black
  • Indexes: Stick / Dot and Alpha-shaped hands
  • Water Resistance: N/A meters


  • Winding: Hand-Wound
  • Brand: A. Lange & Söhne
  • Caliber: L952.1
  • Display: Analog
  • Diameter: 32mm
  • Jewels: 45
  • Power Reserve: 36 hours
  • Frequency: 18000 bph
  • Functions: Hours, Minutes, Small Seconds, Additional 24 Hour Hand (fixed)

About A. Lange & Söhne

A. Lange & Söhne logo

Ferdinand Adolph Lange founded A. Lange & Söhne in 1845 in Glashütte, Germany. A. Lange & Söhne watches are instantly recognizable as a different style in movement construction. The characteristics are closer to classic British watches than Swiss. Three quarter plates with engraved balance cocks are often seen, along with screwed chatons for the jewels. A. Lange & Söhne is part of the Richemont group.

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