This watch features some of Dirk's most interesting complications - an in-house power reserve indicator, central seconds and a 24 hour GMT subdial that allows this watch to track two time zones.
This watch features the Dornblueth & Sohn Calibre 99.10 A&A (Auf and Ab/Up and Down) which was both developed and created in Dirk's workshops in Kalbe, Germany.
The power reserve indicator is located on the top half of the dial with the unique 24 hour GMT subdial on the bottom half.
The large central hour hand moves forward by pressing the button in the case at 2, allowing for easy adjustment when changing time zones. "Weltzeit" in the name means "world time" in German, referring to the addition of a second time zone on this piece.
As is typical in a Dornblueth watch, Dirk includes all the "good stuff" - 3/4 plate, beveled edges, screw balance wheel, swan neck regulation, engraved balance cock, screwed gold chatons, and blued screws (by flame of course, including the slots).
And now the extras. The name "D. Dornblueth & Sohn, Kalbe i./S.A." is hand engraved and not machine engraved, a virtually rarity on any watch. And all of the decoration (Côtes de Genève and the sunray finish on the crown wheel and ratchet) are all done in-house, by hand. You'll notice that the movement is rose gold in appearance - this process itself is elaborate. After cutting and polishing the plate, Dirk treats the surface to turn the metal a copper color. After all of the drilling and milling operations are complete, the movement itself is treated with rose gold to enhance the deep color.
The dial features an engraved finish with a silky matte surface of a similar style to historical ship chronometers and precision pendulum clocks.
This watch features a brushed and polished nickel-free steel case and the crown is signed D. Dornblueth, as is the tang buckle. Power reserve is 52 hours.