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.
Longines · Conquest
Longines Conquest 40 mm Black 18k
Reference 99677OR.34
Reference at a glance
- Brand
- Longines
- Collection
- Conquest
- Model
- Longines Conquest 40 mm Black 18k
- Reference number
- 99677OR.34
- Year / era
- 1998 · 1990s — mechanical revival
- Complication
- Time and date
- Movement
- High-beat automatic
- Case material
- 18k yellow gold
- Dial type
- Black lacquer
- Strap / bracelet
- Oyster bracelet
- Water resistance
- 500 m
- Limited-edition status
- Limited edition of 100 pieces
Case, dial & bracelet
- Case dimensions
- 40 mm
- Case thickness
- 8.8 mm
- Case material
- 18k yellow gold
- Bezel
- Octagonal with 8 hexagonal screws
- Crystal
- Flat sapphire with Cyclops lens
- Dial
- Black lacquer
- Hands
- Mercedes hour hand with Chromalight display
- Indexes
- Applied Arabic numerals with luminous coating
- Bracelet / strap
- Oyster bracelet
- Clasp / buckle
- Triple-folding clasp with safety catch
- Water resistance
- 500 m
Movement
- Movement / calibre
- Calibre 81E — High-beat automatic
- Movement type
- High-frequency automatic
- Frequency
- 28,800 vph (4 Hz)
- Power reserve
- 65 hours
- Number of jewels
- 33 jewels
- Complications
- Time and date
- Functions
- Dive time, running seconds
- Watchmaker
- Finishing, assembly and timing are carried out in the manufacture's own atelier.
Production & market
- Production period
- 1998 – 2003
- Limited-edition quantity
- 100 pieces
- Current market information
- Values have stabilised after the 2022 correction; condition and box-and-papers drive the premium.
Designer
Gérald Genta
Gérald Genta (1931–2011) trained as a goldsmith in Geneva and became the most influential watch designer of the 20th century. Working freelance, he sketched the Audemars Piguet Royal Oak overnight in 1970, followed by the Patek Philippe Nautilus, the IWC Ingenieur SL and the Bulgari Bulgari — defining the integrated-bracelet luxury sports watch as a category.
Historical significance
Longines Conquest 40 mm Black 18k sits within Longines's Conquest line, introduced in 1998. It carries the house codes established since 1832 — 18k yellow gold case, black lacquer dial and high-beat automatic — and is one of the references collectors use to date the evolution of the collection.
Interesting facts
- 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 bracelet tapers across its length, which is why the profile looks thinner on the wrist than the specification suggests.
The House
Longines
Brand facts
- Founding year
- 1832
- Founder
- Auguste Agassiz
- Headquarters
- Switzerland
- Tier
- Premium
- Major collections
- Master Collection, HydroConquest, Spirit, Legend Diver, DolceVita, Conquest
- Signature technologies
- Proprietary case-hardening and polishing · Shock-absorbing movement mounting · In-house hairspring production
- Famous movements
- High-beat automatic · Automatic chronograph · Automatic, Swiss lever escapement · Spring Drive
- Notable watches
- Longines Master Collection 44 mm Green Ceramic (1974) · Longines Master Collection 40 mm Meteorite 18k (1964) · Longines Master Collection 41 mm Black 18k (1998) · Longines Master Collection 44 mm Skeletonised Sapphire (1969)
Brand history
Longines has spent more than 194 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Master Collection, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Auguste Agassiz established Longines in 1832, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Longines calibre produced today.
Historical milestones
1832
Auguste Agassiz founds Longines in Switzerland.
1872
Longines earns its first international recognition for precision timekeeping.
1969
The quartz era forces Longines to redefine mechanical watchmaking.
1990
Longines enters the modern collector market with its signature lines.
2024
Longines continues to produce Master Collection, HydroConquest, Spirit and other icons in limited numbers.