One-off piece in titanium

TOURBILLON Orange Titanium


The unique TOURBILLON Orange comes with an ultra-light case made of brushed titanium and a freshly sporty look thanks to its colour combination of bright orange and grey. The orange solid silver dial is adorned with Arabic numerals and handmade hands. The instrumental character of the TOURBILLON Orange is accentuated by the finely divided minute scale. The subsidiary dials for the hour and second display are grey to match the titanium case. An opening at 6 o’clock reveals Grossmann’s unusually large and flying three-minute tourbillon.

The area between 25 and 30 minutes left by the tourbillon cut-out can be precisely read thanks to the extension of the minute hand on an opposite scale. Additional special features include the flying tourbillon cage with V-shaped balance bridge and the special second stop with a brush made of human hair to stop the balance.

The TOURBILLON Orange Titanium is offered with the calibre 103.0 in the high artistic hand finish as a single edition 1 of 1.

The calibre 103.0

Discover everything about the heart of the BENU Tourbillon.

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Tech Specs


Manufacture calibre 103.0, manually wound, adjusted in five positions

Functions / features

Flying three-minute tourbillon with screw-secured driving wheel and V-shaped balance bridge (design patent pending); Sweep minutes, off-center hours and seconds with stop seconds; 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 (patented); Stop seconds at the balance wheel rim with a pivoting fine-hair brush (patent pending); asymmetric-arm lever escapement with counterweight and lever banking pin; Grossmann balance with suspended balance spring, adjustable with poising screws in the rim; newly developed mainspring barrel jewel bearing; brake ring on the fourth-wheel arbor made of very hard, oily guaiacum; ARCAP train wheels; Grossmann winder with pusher to deactivate the hand setting mode and start the movement; modified Glashütte stopwork with backlash; pillar movement with 2/3 plate and frame pillars in untreated German silver; hand-engraved 2/3 plate and tourbillon cock; broad horizontal Glashütte ribbing; 3-band snailing on the ratchet wheel; raised gold chatons with pan-head screws; white sapphire bearing jewels; separately removable clutch winding mechanism

No. of parts

245 (wheel train 186, cage 59)

No. of jewels

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


Lever escapement


Grossmann three-minute tourbillon with stop seconds; shock-absorbed Grossmann balance with 4 inertia and 2 poising screws, suspended Nivarox 1 balance spring with No. 80 terminal curve, Gerstenberger geometry

Cage diameter

16,0 mm

Cage speed

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

Balance diameter

14.2 mm, frequency 18,000 semi-oscillations per hour

Power reserve

72 hours when fully wound

Operating elements

Crown in Titanium to wind the watch and set the time, pusher in Titanium to start the movement

Case dimensions

Diameter: 44.5 mm, height: 13.8 mm

Movement dimensions

Diameter: 38.4 mm, height: 7.1 mm


Three-part, in titanium


Solid silver, three-part, orange/grey with Arabic numerals


Manually crafted, steel or stainless steel polished

Crystal / display back

Sapphire crystal, antireflective coating on one side


Hand-stitched alligator strap with butterfly clasp in titanium

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TOURBILLON Orange Titanium

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