The Basics

The ref. 245.021 1815 ‘Kalenderwoche’ was created in celebration of the 150th anniversar of Munich ALS dealer Huber. It features a yellow gold case and a movement indicating the week number and day.

Brand: A. Lange & Söhne
Family: 1815
Reference: 245.021
Name: 1815 Kalenderwoche
Produced: 2006 – 2007
Limited: Yes, 50 units

Below is a detailed look at A. Lange & Söhne’s model 245.021 from 1815 watch family, including the price, case details and movement features.

A. Lange & Söhne 1815 245.021

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The Details

A. Lange & Söhne’s 1815 Kalenderwoche (245.021) was originally released in 2006 – 2007. This watch features a hand-wound movement beating at a frequency of 21600 bph ( 3 Hz) to provide a 45-hour power reserve when fully wound.

The Case

The yellow gold case measures 38.4mm in diameter and roughly 9.8mm thick, with 20mm lug width. The N/A case is paired with a silver color dial with alpha-shaped hands, and a arabic numerals hour markers and minute track, covered by a glass. A. Lange & Söhne’s 1815 model 245.021 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: Yellow gold
Back: Display
Shape: N/A
Diameter: 38.4mm
Height: 9.8mm
Lug Width: 20mm
W/R: N/A

Case Diameter

Case Thickness

Lug Width

Water Resistance

The Movement

The 1815 245.021 movement is a powered by caliber L045.1 made by A. Lange & Söhne. The 29-jewel hand-wound movement is 25.6mm in diameter. Its balance wheel oscillates at 21,600 semi-oscillations per hour or 3 Hz. This movement offers a 45-hour power reserve.

Type: Hand-Wound
Brand: A. Lange & Söhne
Caliber: L045.1
Base: A. Lange & Söhne L941.1
Display: Analog
Diameter: 25.6mm
Jewels: 29
Reserve: 45 hours
Frequency: 21600 bph
Time: Hours, Minutes, Small Seconds

The Price

How much does the A. Lange & Söhne’s 1815 245.021 cost? This watch was introduced in 2006 and has been in A. Lange & Söhne’s collection for around . This watch is a limited edition with just 50 pieces released. 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: 1815 Kalenderwoche
  • Reference Number: 245.021
  • Limited: Yes, 50 units

Case & Dial:

  • Material: Yellow gold
  • Glass:
  • Back: Display
  • Diameter: 38.4
  • Thickness: 9.8
  • Lug Width: 20
  • Dial Color: Silver
  • Indexes: Arabic Numerals and Alpha-shaped hands
  • Water Resistance: N/A meters


  • Winding: Hand-Wound
  • Brand: A. Lange & Söhne
  • Caliber: L045.1
  • Display: Analog
  • Diameter: 25.6mm
  • Jewels: 29
  • Power Reserve: 45 hours
  • Frequency: 21600 bph
  • Functions: Hours, Minutes, Small Seconds

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.

A. Lange & Söhne Watches

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