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Calibre analysis / Manual winding

GENUS GNS1.2WG: reading time along a figure-eight path

In the original GNS1.2WG, twelve independent elements travel in a figure eight, while time combines the hour on the left, tens of minutes in the centre and units on the right. We examine the 160W-1.2 calibre and the habits it asks of its owner.

Published 4 November 20265 min read
GNS1.2 WG
Photo: GENUS · Image source

The essentials first

In one minute

Case18K white gold; 43 × 13.1 mm
Calibre160W-1.2, manual winding
Power reserveApproximately 50 hours; single barrel

Why it is interesting

The GNS1.2WG's strength is making the motion of its indicators fascinating in its own right. Its most engaging mechanism can be watched from the front.

Things to consider

Three separate readings take practice, and roughly 50 hours of reserve will not bridge Friday evening to Monday morning.

GENUS · GNS1.2 WG

The movement in detail

The movement’s idea

With the GENUS GNS1.2WG, the eye first catches a procession of small lozenges circling two blue wheels. The light-coloured leading element gives the tens of minutes, while the eleven following components make the passage of time visible. This is the original white-gold GNS1.2, introduced in 2019, examined here using the manufacturer's 2020 documentation. Its appearance invites a search for some elaborate astronomical function, yet the watch displays only hours and minutes. The engineering interest lies entirely in how that information reaches its owner.

Start reading on the left. The relevant hour numeral passes a stationary arrow at the nine o'clock position. There are twelve of these satellites: they complete a circuit around the periphery every twelve hours while also turning on their own axes. Every three hours, each indicator changes its orientation by 90 degrees. The numerals therefore do more than travel around a circle; they maintain the intended reading orientation. In effect, GENUS exchanges the familiar roles: the hour scale moves while its pointer stays put.

Minutes combine two readings. The central leading lozenge, which the brand calls the genus, indicates the tens; the small openworked disc on the right, beside the crown, gives the units from 0 to 9 against a fixed arrow. For example, an hour numeral of 8, a central value of 40 and a right-hand digit of 7 make 8:47. This is a hypothetical reading example, not the time in the photograph. The arrangement can indicate individual minutes precisely, but initially it requires consciously combining three numbers rather than recognising the familiar position of two hands.

Practical meaning

The construction's principal trick happens where the two central orbits meet. Twelve mobile elements pass from one wheel to the other and continue along a figure-eight path. According to GENUS, they are not attached to each other and follow one another without touching. This is therefore no chain that can simply be drawn around two sprockets. Each element must be held on its path and transferred between the wheels. That is what makes the solution compelling: the problem of directing mechanical motion stays in full view instead of disappearing beneath a conventional dial.

Side view of the GNS1.2WG: the domed sapphire reveals the different levels of the display mechanism.Enlarge

Side view of the GNS1.2WG: the domed sapphire reveals the different levels of the display mechanism.

© GENUS · Source

Behind this unusual display is the hand-wound 160W-1.2 calibre: 418 components, 26 jewels and a frequency of 18,000 vibrations per hour, or 2.5 Hz. A single barrel provides approximately 50 hours of power reserve. The escapement is a conventional Swiss lever design, with a variable-inertia balance. More interesting is the construction's division into two parts, separating energy storage and transmission from distribution and regulation. GENUS explains that the regulating section can be removed during development and adjustment to check the smooth operation of the complications. An unusual display does not in itself promise greater timekeeping accuracy.

The original GNS1.2WG has an 18K white-gold case measuring 43 mm across and 13.1 mm thick. The movement's mainplate and bridges are also gold; the front and rear sapphire crystals have an antireflective coating. The side view in the official photographs is particularly useful, revealing the volume occupied by the layered display beneath the domed crystal. The architecture looks much calmer from the back, and that contrast helps explain the watch. A navy-blue calfskin strap and gold pin buckle complete this particular historical configuration, rather than describing the brand's entire present-day catalogue.

Rear view: the hand-wound 160W-1.2, with its gold mainplate and bridges, looks calmer than the exposed display on the front.Enlarge

Rear view: the hand-wound 160W-1.2, with its gold mainplate and bridges, looks calmer than the exposed display on the front.

© GENUS · Source

The everyday compromise involves attention and habit. Leave a fully wound watch off your wrist on Friday evening and the stated reserve of roughly 50 hours will not last until Monday morning: it will need winding and setting before its next outing. Water resistance is 30 m, so treating this mechanism as a sports watch would be a mistake. But the more important question comes before buying: do you enjoy the act of reading three separate indications? The GNS1.2WG makes sense for someone interested in watching a watch work; someone who simply wants an instant time check may find that same characteristic gets in the way.

Sources

GENUS: GNS1.2WG press kit, version 0320genuswatches.swissGENUS: GNS1.2 short specifications, version 0320genuswatches.swissGPHG: original GNS1.2, reference GNS1.2WG, 2019www.gphg.orgGENUS: official GNS1.2 WG press photographsgenuswatches.swiss