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URWERK EMC TimeHunter ‘Stormtrooper’

Independent Geneva watch brand URWERK presents ‘Stormtrooper’, the new white ceramic version of it EMC TimeHunter watch.

The EMC TimeHunter “Stormtrooper” belongs to the UR-Chronometry family, which offers the unique possibility of measuring and adjusting the rate of their movement.

The EMC “Stormtrooper” is crafted from steel and its caseback from titanium. Its stainless steel ‘hood’ is micro-bead blasted and then given a hard, matt ceramic lacquer-type treatment. As a result, the surface of the EMC TimeHunter “Stormtrooper” has a grainy finish reminiscent of military equipment.

On its matt black dial surface, each indication zone has its own clearly marked space. Each unit is painted with fluorescent green Super-LumiNova®, a neon-type colour frequently used by URWERK due to its perfect contrasts.

In addition to the main dial with its chequered hand grenade pattern, which displays the hours and minutes, the EMC TimeHunter features a small disc-type seconds hand at 1 o’clock, graduated in five-second increments and located at 1 o’clock. It is complemented by a power-reserve indicator at 7 o’clock, which provides information on the state-of-wind of the hand-wound movement offering a maximum 80 hours of autonomy.

The indications linked to the chronometric precision monitoring function are concentrated at 11 o’clock and indicated by the “EM Control” marking on the screw-down bezel. The rate accuracy is graduated from -15 to +15, using seconds as the measurement unit for the daily rate deviation. The amplitude ranges from 180 to 330, measured in degrees.

At the very heart of the EMC concept lies an electronic/mechanical system that makes each of these timepieces totally one-of-a-kind, bestriding two worlds. It is an entirely mechanical watch, optimised with the help of an electro-optical circuit. On the one hand, its hand-wound movement stems from the mind and hands of URWERK. Designed exclusively for the EMC collections, the UR-EMC2 calibre is entirely crafted, finished, assembled and adjusted by URWERK.

On the other hand, it incorporates an electronic module whose function is to measure the rate of the mechanical part. It has its own power source, separate from the rest of the movement. Positioned on the side of the case, a large retractable lever raises a dynamo which feeds the control micro-circuit. Thanks to its laser diode, it is able to collect two essential data relating to the movement.

Pointing towards the balance, it reads its amplitude (an indicator of the movement’s state of health) and the rate deviation (which is an indicator of accuracy), while comparing them to an internal clock. The latter takes the form of a processor operating at a frequency of 16 MHz and serves as a reference oscillator.

On one side, the watch houses the ‘engine’; and on the other, the control unit. Yet these two entities are not sealed off from each other, quite the contrary. They are integrated, nested and URWERK has created a means of access to both that makes EMC TimeHunter the world’s only truly wearer-adjustable watch.

A timing adjustment screw makes it possible to manually fine-tune the oscillation speed of the balance and thus to correct the variations in rate that inevitably appear over time and are intimately dependent on the use made of the watch by its wearer. This corrector is located on the back of the watch and is duly indicated by the engraving “Fine Tuning”. It manages the performance of the movement by modifying the length of the regulating balance-spring.

Technical details

Model: URWERK EMC TimeHunter Stormtrooper (five-piece edition)

Case
Ceramic-lacquered grade 5 titanium and stainless steel
Dimensions: Width 43 mm; length: 51 mm; thickness: 15,8 mm
Glass and case-back: Transparent sapphire crystal
Water resistance: Pressured tested to 30 m/3 ATM
Finishes: Satin-brushed; micro-bead blasted

Movement
Calibre UR-EMC2, designed, developed and produced by URWERK
Escapement Swiss lever escapement
Balance: ARCAP P40; exclusive design; coupled with the optical sensor
Frequency: 28 800 vph – 4 Hz
Balance-spring: Plat
Energy source: Series-coupled twin vertical barrels
Power reserve: 80 hours
Winding: Manual winding
Finishes: Côtes de Genève motif; snailing; micro-sandblasting; bevelled screw heads

EMC TimeHunter unit
Generator: Maxon® hand-wound generator charging the accumulator
Control organ: Optical sensor controlled by an integrated circuit; reference oscillator operating at a frequency of 16 MHz

Indications
Hours, minutes, rate deviation, amplitude and chronometric performance indicator δ, power reserve, fine tuning screw

Price
CHF 115’000.000 (Swiss francs / tax not included)

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