Last year Urwerk launched the UR-100 SpaceTime, a watch that installed the brand’s signature wandering hours satellite display in newly designed watch case. Unsurprisingly the UR-100 SpaceTime became a brisk seller, not only because it is the most affordable model in the catalogue, but also because its case is compact and relatively conventional in shape, making it the most wearable Urwerk watch by far.

And so Urwerk has followed up with the UR-100 Gunmetal, a new variant that arrives just four months after four months after the model was launched. It feels a little bit too soon for another edition, but the Gunmetal is different enough – and the original versions are almost sold out – that it can be forgiven.

Steel in disguise

While the case of the new UR-100 remains the same design, the finish is unusual. The material looks like titanium, even up close it resembles titanium, but in the hand it is obviously too heavy to be titanium.

The case is actually steel, which has been sandblasted to give it a smooth, matte finish and then coated with a dark grey coating. That’s a bit of a surprise, because watch cases that look like titanium are almost always titanium. But Urwerk’s rationale for using steel is practical: hard-coated steel is more resistant to scratches than titanium, which is generally quite soft.

The result is watch that has a strong sci-fi military look, like a piece of kit used by the Marines in Aliens, which is very much Urwerk’s original house style so it works well.

Though the finish is different, the case design is exactly the same. As a result, the only possible drawback of the muted case finish is the loss of the contrasting surfaces found on the original steel version, which had brushed flat surfaces separated by a wide, polished bevel.

The dull, military-esque finish suits the watch better in my opinion, but the brighter finish on the original version looks a bit more luxe.

Satellite time

Mechanically the Gunmetal is identical to the standard UR-100, which also means it is descended from Urwerk’s very first, foundational watches, notably the UR-103, that told the time in almost the same way.

A trio of rotating satellite discs (each with its own minute pointer) form a wandering hours display that shows the current hour on a disc, alongside a red pointer that indicates the minutes. Even though the wandering hours has been an Urwerk mainstay for almost two decades, and also made famous by Audemars Piguet with its Star Wheel, it is different enough that it’s still interesting.

The open-worked cover over the satellites is made of aluminium, while the satellites themselves and the carousel that carries them are made of brass

The time shown almost 12:44

More unusual are the astronomical distance indicators, essentially simplistic displays that repurpose the dormant minute pointer that show cosmic distances travelled over time. The scale at 10 o’clock shows distance travelled by Earth’s rotation on its own axis, measured at the equator, which is 555 km every 20 minutes. And the scale at two indicates the distance travelled by the Earth around the Sun, which is 35,740 km every 20 minutes.

The incorporation of the two distance displays is not mere whimsy; Urwerk cofounder Felix Baumgartner got the idea from a pendulum clock made by Gustave Sandoz, a 19th century French clockmaker. The clock shows the passing of time, but does not display the time, instead showing the distance travelled by a point on the equator as the Earth rotates.

Though interesting philosophically, and also an inventive use of the dormant minute hands, the astronomical indicators don’t add much to the watch. At the same time, they don’t detract from the aesthetics, because the scales are on the periphery of the dial.

Windfänger

The case of the UR-100 is the most conventional amongst all Urwerk watches, not just in style but also in construction. The case back is secured by four screws, much like an ordinary watch. Through the sapphire window in the back, the movement is visible.

The rotor is a strange-looking perforated disc that is weighted on one side and also equipped with a propeller-shaped wheel. Urwerk refers to the wheel as windfänger, an aggressive-sounding German term that translate into something quite ordinary – “air trap” – because it regulates the swinging of the rotor, preventing it from spinning too freely or too much. Like the astronomical display on the front, the windfänger is probably not necessary, but is interesting nonetheless.

The windfänger

Beneath the elaborate rotor, the movement is a self-winding Zenith Elite, a reliable calibre that powers most of Urwerk’s current models, which has been combined with Urwerk’s proprietary time display module.

Concluding thoughts

The UR-100 in general is one of Urwerk’s best recent products, because it sticks to what Urwerk is good at, the satellite time display. Though the mechanics are not novel, it is still unusual enough to be interesting.

And it does so without being too big or clumsy, or too expensive. While the case is not as elaborate as the usual Urwerk, it is lighter, thinner, and far more wearable, which is an important quality.

Of the variants, the Gunmetal is surely the most interesting and appealing version of the UR-100 so far. And it costs the same as the earlier versions, which makes it a more compelling buy. But that comes with a caveat: Urwerk will surely unveil more variants of the same, which may or may not be cooler.

Key facts and price

Urwerk UR-100 Gunmetal

Case diameter: 41 mm
Case height: 14 mm
Material: Steel with gunmetal coating
Water resistance: 30 m

Movement: UR 12.01
Features: Satellite hours and minutes; Earth’s rotational and orbital distance
Frequency: 28,800 beats per hour (4 Hz)
Winding: Automatic
Power reserve: 48 hours

Strap: Grey fabric

Limited edition: 25 pieces
Availability: At Urwerk retailers
Price: 48,000 Swiss francs

For more, visit Urwerk.com.