The Alpina Worldtimer wrist watch with rotating ring showing 24 inscribed cities.

The Alpina Worldtimer watch features a rotating ring with the names of 24 cities inscribed on it. A second rotating ring has 24-hour markers.

This is used to display time in different time zones. Local time is shown by a standard hour and minute hand. The Alpina Worldtimer watch has a mechanical automatic caliber AL-718 with 26 jewels and has a 48-hour power reserve. The watch is water resistant to 10 ATM. The watch is finished off with a black leather crocodile strap. The front and the back of the watch are covered with sapphire crystal.

By the mid-nineteenth century, Greenwich Mean Time (GMT) had been established as the primary reference time zone for the British Empire and for much of the world. GMT is based on the line of longitude running through the Greenwich Observatory located in the suburbs of London. Over time, time zones became established based on GMT as being x number of hours ahead or behind GMT. Interestingly, the clock began at noon under GMT so noon was represented by zero hours. As more sophisticated timepieces became available, the need for a new timepiece showing world time became apparent. A world time watch lets its wearer see the time in all of the 24 zones around the world.

The world time system works this way. First, the local city is set at the top by changing the disc via the crown. For example, Genève is set on top. It means that the hour and minutes hands are representing the time in Genève (= Central Europe).

From the outer dial, the wearer can check the times in different time zones. Under the label New York, the number displayed is 5, meaning that it is 5:07 a.m. in New York. Under the name Moscow, you see the number 13, meaning that it is 13:07 hours, or 1:07 p.m., in Moscow. In this way, the Alpina Worldtimer shows the time around the world in a glance.

The Alpina Worldtimer is part of the Alpina Aviation collection, developed in close collaboration with Cessna Aircraft and PrivatAir. Alpina Genève, Cessna Aviation and PrivatAir work together closely to promote their equally high quality products and services, through cross-marketing activities in Europe and North America.

Developed in-house, the Alpina Worldtimer is based on the AL-710 caliber used in the Startimer Manufacture. The new Worldtimer caliber (AL-718) ensures easy adjustment of all functions, through a single crown. Best of all is its price, well below any other high-end Worldtimer with manufacture movement!

Furthermore, the production of the Alpina Startimer Worldtimer will be limited at 8’888 pieces and they will be presented in a dedicated, luxurious packaging, alongside a Cessna Citation Mustang scale model in PrivatAir livery.

Alpina Worldtimer wrist watch specifications:

• Case:
  Brushed and polished stainless steel 2-piececase, diameter of 44 mm Convex sapphire crystal, See-through case back Water-resistant to 10 ATM
• Movement:
  AL-718 Manufacture caliber, automatic with date by hand adjustable by the crown, and worldtimer function, adjustable with the crown. Perlage & Circular Côtes de Genève decoration on the movement PVD Black coated Alpina rotor 26 jewels, 42-hour power reserve
• Dial:
  Black dial with luminous indexes and numerals White luminous hands Date counter at 6 o’clock 24H disc, with day-night indication City disc with 24 cities
• Strap:
  Black crococalf strap with stainless steel folding buckle Water-resistant inner lining