A. Lange & Söhne Lange 1 Time Zone

Time-zone watch with new manufacture calibre

A. Lange & Söhne Lange 1 Time Zone
Reading Time: 6 minutes

The A. Lange & Söhne LANGE 1 TIME ZONE indicates the time at home and in another time zone at a glance. Fifteen years after its launch, it has now been endowed with a new manufacture calibre. Ring-shaped day/night indicators assure good legibility and the new daylight saving time indication is a useful addition.

A. Lange & Söhne Lange 1 Time Zone
The world’s 24 time zones on the wrist: LANGE 1 TIME ZONE

In precision watchmaking, the “second time zone” function is a particularly convenient complication, especially because more and more people travel, work and communicate intercontinentally. For them, A. Lange & Söhne had already introduced a watch with two time zones in 2005. It was based on the Lange 1 and comfortably displayed the time in 24 time zones.

A. Lange & Söhne Lange 1 Time Zone

The new version of the LANGE 1 TIME ZONE combines functionality with eminent legibility and superb craftsmanship. Its personality is characterised by an asymmetric dial with two time displays, an outsize date and a power-reserve indicator. And it retains the switchable city ring that allows convenient setting of the second time zone.

A. Lange & Söhne Lange 1 Time Zone

Two times at a glance

In contrast to world time watches, the LANGE 1 TIME ZONE provides the time at home and the time in a second zone at a glance. While the larger time circle shows home time, the smaller of the two time circles can be set to a second time zone by adjusting the city ring. When the time is adjusted with the crown, both displayed times are corrected simultaneously.

A. Lange & Söhne Lange 1 Time Zone

Ring-shaped day/night indicators

One of the key innovations is that the day/night indicators for home time and zone time, originally displayed with rotating arrow hands, have been shifted to the centres of the two time circles. There, together with the hour hand, they inform the user whether the time indication applies to the first or second half of the day. The ring-shaped day/night indicators are not only harmoniously designed, they are also intuitively readable. Featuring blue printed semicircles, the discs rotate once about their axes in 24 hours while the hour hand performs two revolutions in the same period. When it is located in the dial-colour segment, the display spans the period from 6 a.m. to 6 p.m. and on the blue background from 6 p.m. to 6 a.m.

A. Lange & Söhne Lange 1 Time Zone

Innovative daylight saving time indication

The new A. Lange & Söhne LANGE 1 TIME ZONE has another convenient feature. It is located in a small aperture of the golden arrow applique at 5 o’clock that indicates the reference location for the zone time that has been set. If the aperture is red, the respective city has a daylight saving time regime. If standard time applies to the city all year round, the display appears on a bright background. This feature is technically implemented with coding on the underside of the city ring.A. Lange & Söhne Lange 1 Time Zone

Simple change of time zones

A feature retained from the predecessor model is the convenient adjustment of the second time zone based on a switchable city ring with 24 time zones. They were defined in 1884 and are represented by 24 reference locations. When the corrector button at 8 o’clock is pressed, the city ring jumps from west to east by one time zone. At the same time, the hour hand in the small subsidiary dial advances by one hour and now indicates the zone time of the city beneath the golden arrow applique that stands for that particular time zone. The hands on the large numerals circle can be set to display the time at home or the time in another freely selectable time zone. To simplify the distinction, zone time is indicated with printed Arabic numerals while home time is displayed with gold Roman numeral appliques.

A. Lange & Söhne Lange 1 Time Zone

Synchronisation mechanism

The new model also retains the unique synchronisation mechanism that makes it possible to transfer zone time from the smaller to the larger dial. This is useful when – during an extended stay abroad, for instance – the user wishes to swap zone time and main time. If the crown is pulled out to the second position, the times of both zones can be adjusted synchronously. But in the process, if the button for setting the second time zone is pressed and held, the hour hand for zone time will stay in its position. Now, the defined new main time can be set independently of zone time. Finally, it may be necessary to correct the outsize date which is connected with main time. This is done with the pusher at 10 o’clock.

A. Lange & Söhne Lange 1 Time Zone
Calibre L141.1

New manufacture calibre

With the new A. Lange & Söhne manufacture calibre L141.1, all models of the LANGE 1 watch family that were originally based on the calibre L901 are now endowed with new movements. The most recent one reflects the experience accrued with the development of 65 calibres so far. In comparison with the predecessor model, the 72-hour power reserve is achieved with only one spring barrel. Further technical details include a classic screw balance and a freely oscillating balance spring crafted in-house and calibrated for a frequency of 21,600 semi-oscillations per hour.


Lange-style quality hallmarks such as the three-quarter plate made of untreated German silver, screwed gold chatons, blued screws, an elaborate whiplash precision index adjuster as well as hand-engraved balance and intermediate-wheel cocks are visible through the sapphire-crystal caseback. The artisanal decoration of the movement, which is assembled twice, reflects A. Lange & Söhne’s high standards in every detail.

A. Lange & Söhne Lange 1 Time Zone

Three versions

The dimensions of the new LANGE 1 TIME ZONE remain unchanged. The case has a diameter of 41.9 millimetres and a height of 10.9 millimetres. The A. Lange & Söhne LANGE 1 TIME ZONE comes in three case/dial combinations: white gold/black, pink gold/argenté, and – in a limited edition of 100 – yellow gold/champagne.

A. Lange & Söhne Lange 1 Time Zone Technical Specifications


  • 136.021
  • 136.029
  • 136.032


  • Lange manufacture calibre L141.1
    • 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 and intermediate-wheel cocks engraved by hand
  • Diameter: 34.1 millimetres;
  • Height: 6.7 millimetres
  • Movement parts: 448
  • No. of jewels: 38
  • Screwed gold chatons: 3
  • Escapement: Lever escapement
  • Power reserve: 72 hours when fully wound


  • Home time and second time zone, each with a ring-shaped day/night indicator;
  • subsidiary seconds with stop seconds;
  • city ring for adjustment of the second time zone with daylight saving time display;
  • outsize date for home time;
  • UP/DOWN power-reserve indicator

Operating elements

  • Crown for winding the watch and setting the time;
  • one pusher each for correcting the outsize date and setting the second time zone


  • Material
    • 136.021 – Yellow gold
    • 136.029 – White gold
    • 136.032 – Pink gold
  • Diameter: 41.9 millimetres;
  • Height: 10,9 millimetres
  • Glass and caseback: Sapphire crystal (Mohs hardness 9)

Dial & Hands

  • Material
    • 136.021 – Solid silver, champagne
    • 136.029 – Solid silver, black
    • 136.032 – Solid silver, argenté
  • Hands and applique
    • 136.021 – Yellow gold
    • 136.029 – Rhodiumed gold
    • 136.032 – Pink gold

Strap and buckle

  • 136.021 – Hand-stitched alligator leather, medium brown / Yellow-gold prong buckle
  • 136.029 – Hand-stitched alligator leather, dark brown / White-gold prong buckle
  • 136.032 – Hand-stitched alligator leather, red brown / Pink-gold prong buckle

Reference 136.021 is limited to 100 watches – Special boutique edition

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