RUAG Aviation has joined forces with German luxury watchmaker Moritz Grossmann to develop a timepiece exclusively for owners of aircraft. The Skylife Watch – presented at the world watch and jewellery exposition, Baselworld, in March 2017 – is the result of a collaboration between the two companies, and epitomises the expertise and craftsmanship for which both companies are renowned.

SkyLife BENU Tourbillon


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SkyLife BENU Tourbillon


Manufacture calibre 103.0, manually wound, adjusted in five positions

No. of parts

245 (wheel train 186, cage 59)

No. of jewels

30, of which 4 in screwed gold chatons (wheel train 17, cage 13)


Lever escapement

Oscillation system

Grossmann three-minute tourbillon with stop seconds, Gustav Gerstenberger geometry, Nivarox 1 balance spring, Shock-resistant Grossmann balance with 4 inertia and 2 poising screws, with No. 80 Breguet terminal curve

Cage diameter

16.0 mm

Cage speed

1 revolution in three minutes, anti-clockwise when viewed from dial side


Diameter: 14.2 mm, Frequency: 18,000 semi-oscillations per hour

Power reserve

72 hours when fully wound

Operating elements

crown for winding the watch and setting the time, pusher to start the movement


Hours and minutes, subsidiary seconds with stop seconds, Grossmann manual winder with pusher


750/000 gold, three part

Case Dimensions

Diameter: 44.5 mm, height: 13.8 mm

Movement dimensions

Diameter: 38.4 mm, height: 7.1 mm


arabic numerals, solid silver, three part


Hand-crafted, polished stainless steel

Glass and Caseback

Sapphire crystal, antireflective coating on one side

Special Features

Grossmann balance with suspended hairspring and adjustment via poising screws in the rim, Grossmann manual winder with pusher for uncoupling the handsetting mode and restarting the movement, space saving and modified Glashütte stopwork with backlash, broad horizontal Glashütte ribbing, 3-band snailing on the ratchet wheel, raised gold chatons with pan-head screws, separately removable clutch winder, ARCAP train wheels, asymmetric-arm lever escapement with counterweight and lever banking pin with suspended balance spring, adjustable with poising screws in the rim, brake ring on the fourth-wheel arbor made of very hard, oily guaiacum, flying three-minute tourbillon with screw-secured driving wheel and V-shaped balance bridge (design patent pending), hand-engraved 2/3 plate and tourbillon cock, newly developed mainspring barrel jewel bearing, replacement of the missing minute scale segment from 25 to 35 minutes with a separate scale swept by the extension of the minute hand on the opposite side (patent pending), stop seconds at the balance wheel rim with a pivoting fine-hair brush (patent pending), sweep minutes, off-centre hours and seconds with stop seconds, white sapphire bearing jewels


alligator leather, hand-stiched

Strap color



Butterfly Clasp

Closer material

750/000 gold