The pursuit of ultra-thin watchmaking is one of the most fascinating aspects of haute horology. Brands like Bvlgari, Piaget, Richard Mille, and Jaeger-LeCoultre have pushed boundaries, merging artistry with cutting-edge engineering to create marvels that are both sleek and mechanically complex.
Here’s a curated look at the top 10 thinnest watches in the world that continue to captivate collectors and enthusiasts alike.
1. Bvlgari Octo Finissimo Ultra COSC
The Bvlgari Octo Finissimo Ultra COSC is among the world’s thinnest and most innovative watches. Building on the Octo Finissimo Ultra legacy, this timepiece introduces a Datamatrix code on the back, replacing the earlier QR code, for a futuristic twist. A true collector’s gem, it is available as a limited edition.
Specifications
- Case: 40mm, 1.70mm thick, octagonal sandblasted titanium
- Dial: Open-work, titanium & tungsten carbide main plate, black PVD hands
- Strap: 1.50mm titanium bracelet with buckle closure
- Movement: Manual winding BVL180 Calibre, 50-hour power reserve
- Functions: Hours, minutes, seconds, shock resistant
Price: ~$530,000
2. Richard Mille RM UP-01 Ferrari
The Richard Mille RM UP-01 Ferrari is not just a watch but an engineering phenomenon. Known as the slimmest automatic tourbillon, this collaboration with Ferrari showcases Richard Mille’s unrivaled craftsmanship. Its robust construction ensures shock resistance despite its razor-thin build.
Specifications
- Case: 39mm, rectangular, 1.75mm thick Grade 5 Titanium, 10m water resistance
- Dial: Skeletonized titanium baseplate, cardinal indexing
- Strap: Black rubber/velcro
- Movement: 1.18mm, 45-hour power reserve
- Functions: Hours, minutes
- Price: $10,42,026.15
3. Bvlgari Octo Finissimo Ultra
Crowned the thinnest mechanical watch in 2022, the Bvlgari Octo Finissimo Ultra is a masterpiece of modern horology. At just 1.70mm thin, it integrates components into the caseback, redefining mechanical engineering.
Specifications
- Case: 40mm, 1.80mm thick, sandblasted titanium, 10m water resistant
- Dial: Open-work with black PVD hands
- Strap: Titanium with integrated folding clasp
- Movement: BVL Calibre 180 (1.50mm), 50-hour power reserve
- Functions: Hours, minutes, small seconds
Price: ~$678,000
4. Piaget Altiplano Ultimate Concept
Released in 2018, the Piaget Altiplano Ultimate Concept was a groundbreaking watch measuring only 2mm thick. Crafted in a cobalt alloy case, it represents Piaget’s commitment to technical artistry while offering timeless elegance.
Specifications
- Case: 41mm, 2mm thick, cobalt alloy, 20m water resistant
- Dial: Open-work, off-centered with starry night details
- Strap: Dark blue leather with pin buckle
- Movement: Hand-wound Calibre 900P-UC, 40-hour power reserve
- Functions: Hours, minutes
- Price: ~$425,000
5.Piaget Altiplano Ultimate Concept Tourbillon
Marking Piaget’s 150th anniversary, this tourbillon version of the Altiplano Ultimate Concept is the thinnest tourbillon watch ever, at just 2mm. Combining cutting-edge materials with iconic craftsmanship, it’s an exceptional feat.
Specifications
- Case: 41.5mm, 2mm thick, cobalt alloy, 30m water resistant
- Dial: Open-work with tourbillon at 6 o’clock
- Strap: Leather with pin buckle
- Movement: Manual Caliber 970P-UC integrated into the case
- Functions: Hours, minutes, seconds, tourbillon
Price: ~$425,000
6. Jaeger-LeCoultre Master Ultra Thin Squelette
A true work of art, the Jaeger-LeCoultre Master Ultra Thin Squelette combines skeletonized craftsmanship with minimalist elegance. At just 3.6mm, it displays the brand’s mastery of ultra-thin design.
Specifications
- Case: 38mm x 3.6mm, 18k pink gold
- Dial: Skeletonized with enamelled chapter ring
- Strap: Burgundy leather with pin buckle
- Movement: Calibre 849 SQ (1.85mm), 33-hour power reserve
- Functions: Hours, minutes, seconds
- Price: ~$75,000
7. Piaget Altiplano (2013 Model)
Introduced for Piaget’s 140th anniversary, the Altiplano 900P was a trailblazer in thin watchmaking at just 3.65mm. Its clever design fuses the movement plate with the caseback, creating a truly elegant piece.
Specifications
- Case: 38mm x 3.65mm, 18k rose/white gold
- Dial: Open-work, off-centered
- Strap: Black leather with pin buckle
- Movement: Hand-wound mechanical, 48-hour power reserve
- Functions: Hours, minutes
Price: ~$60,000
8. Bvlgari Octo Finissimo Tourbillon (2014)
The Bvlgari Octo Finissimo Tourbillon, launched in 2014, held the record for the world’s thinnest tourbillon watch at just 5mm thick. With its flying tourbillon and platinum case, it’s a striking combination of innovation and luxury.
Specifications
- Case: 40mm x 5mm, platinum octagonal
- Dial: Lacquered black with platinum hands
- Strap: Leather with pin buckle
- Movement: Manual-winding, 52-hour power reserve
- Functions: Hours, minutes, tourbillon
Price: ~$177,000
9. Bvlgari Octo Finissimo Automatic (Baselworld Edition)
A bold statement piece, the Baselworld Octo Finissimo Automatic showcases Bvlgari’s geometric design DNA with a record-thin 2.23mm movement. Its sandblasted titanium case adds a modern edge.
Specifications
- Case: 40mm x 5.51mm, titanium, 30m water resistant
- Dial: Grey with baton markers and black PVD numerals
- Strap: Leather or titanium bracelet
- Movement: Automatic Calibre BVL 138 (2.23mm), 60-hour power reserve
- Functions: Hours, minutes, small seconds
Price: ~$12,900
10. Bvlgari Octo Finissimo Perpetual Calendar
Launched in 2021, the Bvlgari Octo Finissimo Perpetual Calendar blends ultra-thin design with complex calendar functions. At 5.80mm thick, it remains the slimmest perpetual calendar watch, automatically tracking leap years and more.
Specifications
- Case: 40mm x 5.80mm, titanium, 30m water resistant
- Dial: Titanium with retrograde indicators
- Strap: Titanium with folding clasp
- Movement: Automatic BVL 305 (2.75mm), 60-hour power reserve
- Functions: Hours, minutes, date, day, month, leap year
Price: ~$110,000
The journey of ultra-thin watchmaking is a fusion of art, precision, and technical audacity. From Bvlgari’s record-breaking Octo Finissimo series to Piaget’s pioneering Altiplano creations, and Richard Mille’s futuristic Ferrari collaboration, these watches are not just timekeepers—they are milestones in horological history.
Each of these masterpieces represents the pinnacle of elegance and engineering, destined to inspire future generations of collectors and connoisseurs.