With the Lange 1 Time Zone, launched in 2005, A. Lange & Söhne presented their vision of a high-end GMT watch with Glashütte origins. Adding to its functionality is a newly developed caliber that indicates daylight savings time. This second generation was initially released in 2020 with a white gold case and black dial, with the second version having a rose gold case and argenté dial.

The latest variant to join the international watch lineup is the 950 platinum variant framing a rhodium dial. This monochromatic color combination adds a new twist to the classic style, highlighting the elegant appeal and smart visibility of all the indicators on the watch. The dimensions of the Lange 1 Time Zone have not been modified: the case has a diameter of 41.9 mm and a height of 10.9 mm.

Key to every Lange watch, the Lange 1 Time Zone is designed with the goal of ensuring excellent readability. By placing the ring with the 24 reference cities on the periphery, the harmonious arrangement does not detract from the distinctive, off-center dial architecture of the Lange 1 series of watches. The display shows the local time, The second time zone, oversized date and power reserve indicator are harmoniously arranged and very legible.

While the larger time circle indicates the home time, the smaller sub-dial shows the time in the second time zone. When the crown at 8 o’clock is activated, the city ring shifts east by one time zone. At the same time, the hour hand in the small sub-dial advances one hour and indicates the time zone of the city – and corresponding time zone – to which the gold applied arrow marker points.

The daylight saving time indicator includes a subtle technical feature. The color in the arrow indicates whether the selected city and time zone observes daylight saving time. In this case, the small aperture will be colored red. If standard time is observed in this location all year round, the background will not change.

To differentiate day and night in both time zones, the Lange Time Zone 1 boasts colored ring day/night indicators linked to the hour hand. They are located in the center of both sub-dials and indicate whether the respective time indication is valid during the first or second half of the day via a blue semicircle.

Another smart feature of the Lange 1 Time Zone is the synchronization mechanism that allows the zone time to be transferred from the smaller sub-dial to the larger sub-dial, making it possible to determine the new home time as the local time. When the crown is pulled to the second position, the time of both zones can be adjusted synchronously. However, if you press and hold the time zone adjustment button, the time zone dial’s hour hand will stop at its position. Now the newly defined primary time can be set independently of the time zone. However, it may be necessary to correct the oversized date, which is connected to the main time, by activating the date correction button at 10 o’clock.

At the heart of the Lange 1 Time Zone is the manufacture caliber L141.1, offering a 72-hour power reserve. Further complications include a classic screw balance and a free-oscillating balance spring made in-house and calibrated to a frequency of 21,600 semi-oscillations per hour.

The exhibition case back brings to life many of Lange’s typical quality marks. These include a three-quarter plate made of untreated German silver, a screwed gold chaton, blued screws, intricate whip-precision index adjusters and an intermediate wheel tap. The hand-wound decoration of the hand-wound movement reflects the brand’s high standards down to the smallest detail.

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