Luca Soprana — Mécanique d'émotion
Calibre LSTO · Vaumarcus
Soprana Time Only — rose gold case, salmon sector dial, flamed-blued lance hands
Collection  /  Soprana Time Only

Soprana
Time Only.

A compact 38.8 mm three-hand watch. The first piece signed under the name Soprana — steel, rose gold or platinum, hand-made in microscopic numbers.
Ref. LSTO · 38.8 mm · 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.

Soprana Time Only — rose gold case with navy alligator strap, front view
№ 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.

Soprana Time Only — salmon sector dial macro with Luca Soprana signature and Vaumarcus engraving
№ 03

A sector dial

The classical sector geometry — an outer minute track interrupted at 9 and 3 by a polished centre field, anchored by a small seconds at 6 o'clock engraved Vaumarcus. Each case material carries its own dial execution; flamed-blued lance hands hold the line, precise and architectural, with no 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
Sector · engraved · execution by case material
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

Specifications and availability.

« We produce only a handful of pieces per year, each built slowly, component by component. Orders are limited and subject to a conversation. »

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

Request Availability →

Soprana Time Only — rose gold case, salmon sector dial, three-quarter detail
Soprana Time Only · rose gold · Vaumarcus