Front view
Dial, hands and bezel as delivered.
Case-back view
Case-back engraving and, where fitted, the sapphire display.
Movement
Calibre with its finishing and decoration.
On the wrist
Worn shot for proportion and strap drape.
Ulysse Nardin · Diver
Ulysse Nardin Diver 42 mm Slate Sapphire
Reference 18810OR.20
Reference at a glance
- Brand
- Ulysse Nardin
- Collection
- Diver
- Model
- Ulysse Nardin Diver 42 mm Slate Sapphire
- Reference number
- 18810OR.20
- Year / era
- 1997 · 1990s — mechanical revival
- Complication
- Minute repeater
- Movement
- In-house manual-winding
- Case material
- Sapphire crystal case
- Dial type
- Slate grey
- Strap / bracelet
- Rubber strap with titanium clasp
- Water resistance
- 50 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 42 mm
- Case thickness
- 12.6 mm
- Case material
- Sapphire crystal case
- Bezel
- Emerald-set
- Crystal
- Sapphire with internal AR treatment
- Dial
- Slate grey
- Hands
- Skeletonised sword hands, white luminescent
- Indexes
- Diamond-set hour markers
- Bracelet / strap
- Rubber strap with titanium clasp
- Clasp / buckle
- Pin buckle in matching case metal
- Water resistance
- 50 m
Movement
- Movement / calibre
- Calibre 2D — In-house manual-winding
- Movement type
- Automatic with micro-rotor
- Frequency
- 28,800 vph (4 Hz)
- Power reserve
- 55 hours
- Number of jewels
- 21 jewels
- Complications
- Minute repeater
- Functions
- Chronograph, tachymeter, date
- Watchmaker
- Finishing, assembly and timing are carried out in the manufacture's own atelier.
Production & market
- Production period
- 1997 – 2001
- Limited-edition quantity
- Not applicable
- Current market information
- Trades close to retail on the secondary market, with steady demand for full-set examples.
Designer
In-house design studio
The reference was drawn by the manufacture's internal design office, where case, dial and movement architects work alongside the watchmakers rather than as an outside commission.
Historical significance
Ulysse Nardin Diver 42 mm Slate Sapphire sits within Ulysse Nardin's Diver line, introduced in 1997. It carries the house codes established since 1846 — sapphire crystal case case, slate grey dial and in-house manual-winding — and is one of the references collectors use to date the evolution of the collection.
Interesting facts
- The case is finished by hand, alternating polished and satin-brushed surfaces in a single pass so the edges stay razor sharp.
- Early production dials show a slightly different minute track, and collectors pay a premium for them.
- The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.
The House
Ulysse Nardin
Brand facts
- Founding year
- 1846
- Founder
- Ulysse Nardin
- Headquarters
- Switzerland
- Tier
- Luxury
- Major collections
- Freak, Diver, Marine, Blast, Executive Skeleton
- Signature technologies
- Proprietary case-hardening and polishing · Composite and ceramic case materials
- Famous movements
- In-house automatic chronograph · In-house automatic, chronometer certified · In-house automatic, Superlative Chronometer · In-house manual-winding
- Notable watches
- Ulysse Nardin Freak 44 mm Slate Carbon (1957) · Ulysse Nardin Freak 40 mm Blue 18k (1960) · Ulysse Nardin Freak 37 mm Skeletonised Quartz (1989) · Ulysse Nardin Freak 37 mm Silvered 18k (2001)
Brand history
Ulysse Nardin has spent more than 180 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Freak, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Ulysse Nardin established Ulysse Nardin in 1846, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Ulysse Nardin calibre produced today.
Historical milestones
1846
Ulysse Nardin founds Ulysse Nardin in Switzerland.
1886
Ulysse Nardin earns its first international recognition for precision timekeeping.
1969
The quartz era forces Ulysse Nardin to redefine mechanical watchmaking.
1990
Ulysse Nardin enters the modern collector market with its signature lines.
2024
Ulysse Nardin continues to produce Freak, Diver, Marine and other icons in limited numbers.