Luca Soprana — Mécanique d'émotion
Calibre LSTO · Vaumarcus
Soprana Time Only — Calibre LSTO · Vaumarcus signature
Collection  /  Time Only

Time
Only.

A 38.8 mm, three-hand dress watch. The first piece signed under the name Soprana — steel, rose gold or platinum, produced in microscopic numbers for serious collectors.
Ref. LSTO · 38.8mm · Calibre LSTO Vaumarcus · Suisse

The essentials, perfected.

« Its movement is inspired by traditional watchmaking — tourbillon movements from the early 20th century. The idea is to highlight mechanics and architecture in all its glory, without ostentation. »

Designing a fine dress watch is not easy. Perfection is in the details. The Time Only focuses on the essentials, bringing the watchmaker's ethos into an elegant three-hander. Symmetry. Linearity. Extreme finishing — never in demonstration.

The vast majority of components — with a few exceptions, such as the case and its crystals — are manufactured in the atelier, the traditional way and predominantly by hand.

Key elements.

Three pillars
Calibre LSTO — caseback
№ 01

Calibre LSTO

Hand-wound, designed and manufactured in-house. Architecture recalls early 20th-century tourbillon movements, reinterpreted as a time-only calibre: a 12 mm balance under a mirror-polished steel bridge, regulated by a long index. 18,000 vph, in-house Breguet overcoil, 42-hour power reserve from a single barrel.

Time Only — rose gold version
№ 02

Steel · rose gold · platinum

A 38.8 mm case, just under 10 mm thick — slim, balanced, discreet on the wrist. Sloping polished lugs keep the profile elegant and understated. Delivered in stainless steel, rose gold or platinum, on alligator leather with a pin buckle.

Two-tone sector dial
№ 03

A two-tone sector dial

A ruthenium-plated, finely-grained base paired with circular-brushed rings and engraved black markings — anchored by a small seconds at 6 o'clock. In-house, flamed-blued lance hands add a precise, architectural touch without any visual noise.

Calibre LSTO — N°01 caseback signature
Calibre LSTO · N°01 · Engraved by hand · Vaumarcus

Technical dossier.

Every specification earned by hand in the atelier, not sourced, not rebranded. The captions — Luca Soprana, Vaumarcus, — engraved directly into the movement.

Ref. LSTO · Serial N° 01 onwards
Calibre
LSTO · hand-wound · in-house
Frequency
18,000 vph
Balance
Large · 12 mm · free-sprung
Hairspring
In-house · Breguet overcoil
Power reserve
42 hours · single barrel
Diameter
38.8 mm
Thickness
9.9 mm
Case
Stainless steel · rose gold · or platinum · polished
Dial
Two-tone sector · ruthenium-plated · engraved
Small seconds
At 6 o'clock
Hands
In-house · flamed-blued lance steel
Plate & bridges
ARCAP · straight Geneva stripes
Crystal
Sapphire · front and back
Functions
Hours, minutes, small seconds
Strap
Alligator · steel pin buckle
Production
≈ 10 pieces per year

2026 prices.

Announced prices before taxes. Each piece is conceived, engineered and finished entirely in-house at SMA — produced slowly, component by component. Orders are limited and subject to a waiting list.

Approximate annual capacity · 10 pieces
Stainless steel
CHF 68,000 + taxes
Rose gold
CHF 82,000 + taxes
Platinum
CHF 82,000 + taxes
Strap
Alligator · steel pin buckle · included
Delivery
By agreement · after a conversation

The waiting list.

« We produce only a handful of pieces per year, each built slowly, component by component. Due to this uncompromising approach, new orders are limited and subject to a waiting list. »

Customisation. We offer a curated level of customisation — cases in stainless steel, rose gold or platinum, and a selection of dial executions. Within this framework, clients can shape details while preserving the integrity of each project. Further bespoke requests may be considered, but must be discussed directly with Luca Soprana.

Join the waiting list →

Soprana Time Only — macro detail
Calibre LSTO · macro · Vaumarcus