This new watch from URWERK takes inspiration from the 17th century night clocks made by the Campani brothers.
According to a legend, the Pope ordered a special clock from the Campani brothers. It had to tell the time in the dark when he celebrated the divine offices at night. But the clock had to be silent so as not to disturb the Pope when he slept, while the time had to be immediately visible. The Campani brothers produced the so-called “wandering hour” clock in which the hands were replaced by hour numerals that successively traversed a scale of 60 minutes. The passing hours were illuminated from within the clock by a candle.
Featuring the trademark satellite wandering-hours indication, the new URWERK model is named after Kryptonite, a mythical, radioactive substance associated with DC Comics superhero Superman since 1949. The name “Kryptonite” derives from the intense green light emitted from the hour markers.
The watch has a wandering hour indication based on a new openwork carousel, which carries the four satellites, each bearing three numerals for the hours. The hours successively sweep past the minutes scale for an analogue and digital display of the time.
A power-reserve indicator and digital seconds make up the rest of the information displayed on the dial. The digital seconds are remarkable in that they indicate tens of seconds. The mechanism was made using a photolithographic process, with each marker open-worked to make it as light as possible. It thus weighs less than a tenth of a gram.
Two pneumatic turbines on the back govern the self-winding rate, which can be set with a lever. In the FULL position, the slightest movement of the wrist is harnessed to rewind the barrel springs. Turn the lever to STOP to disengage the self-winding system and wind up the UR-105 using the crown. If you are particularly active, select the intermediate position, RED (for reduced). This engages the turbines to dampen the winding rotor and avoid overstressing the mainspring.
Calibre UR 5.03 with the self-winding system governed by twin turbines
Frequency: 28,800v/h – 4Hz
Power reserve: 48 hours
Satellite hours turning on Geneva crosses in beryllium bronze; open-worked aluminium carousel; open-worked digital seconds; carousel and triple base-plates in ARCAP
Circular graining, sanding, brushing
Chamfered screw heads
Hours and minutes painted in SuperLuminova
Wandering hours; minutes, digital seconds
UR-105 CT hunter case in titanium, coated with AlTiN
Width 39.5mm; length: 53mm; thickness: 17.8mm
Glass: Sapphire crystal
Water resistance: Pressure tested to 3ATM (30m)
CHF 65’000.00 (Swiss francs / tax not included)