NELIUBIN ROMAN ATELIER
02
CARBONLIGHT
A 4.9-gram titanium flying tourbillon, cut into a single block of carbon. No case joints, no spring bars — built to be among the lightest tourbillons ever put on a wrist.
02 CARBONLIGHT is one piece. Bezel, case middle, and caseback floor are cut from one continuous block of carbon composite — no horizontal joints, no internal fastening tubes, no lateral ears.
The strap threads straight through milled slits in the case wall. No spring bars anywhere on the piece. The whole case is built around one goal: to carry a 4.9-gram titanium flying tourbillon as one of the lightest tourbillons ever put on a wrist.
Chasing the lightest
tourbillon on record.
Case mass scaled from 01 SILICA's quartz composite case (4.20g) by density ratio (1.55g/cm³ carbon vs 1.98g/cm³ quartz composite) and thickness ratio (6.94mm vs 7.44mm). Crystal is PMMA (~1.18g/cm³) at 0.70mm, flat-top. Seals throughout add 0.05g, and crown & stem are reasoned from titanium-core/carbon-ring cap geometry scaled to this case's 6.94mm thickness.
All figures on this page are current engineering targets, based on final CAD and confirmed material densities — not measurements from an assembled unit. Final production figures may shift slightly once the first pieces are built and weighed.
Four decisions that
chase the record.
One-piece carbon monocoque
One piece. Bezel, case middle and caseback floor are a single canister, machined from one block of carbon composite with walls down-gauged to 0.50–0.60mm wherever load allows.
Loop-through strap interface
The strap threads directly through precision-milled horizontal slits in the 12H and 6H case walls. No spring bars — no external strap hardware at all.
Skeletonized Al-Li rehaut — 0.70 grams
A skeletonized Aluminium-Lithium rehaut, with every non-structural section down-gauged to 0.70 grams combined with the hands.
Flying tourbillon — 4.9-gram titanium
A custom flying tourbillon caliber, cut entirely from Grade 5 titanium. At 4.9 grams it is almost half of the piece — the reason every other gram is fought for.
A limited edition.
Built to be among the lightest.
02 CARBONLIGHT is in active development. Each piece is considered individually, one client at a time — reach out to follow the build or discuss a reservation.