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 · HydroConquest
Longines HydroConquest 44 mm Ice Quartz
Reference 47424OR.99
Reference at a glance
- Brand
- Longines
- Collection
- HydroConquest
- Model
- Longines HydroConquest 44 mm Ice Quartz
- Reference number
- 47424OR.99
- Year / era
- 1984 · 1980s — quartz-crisis era
- Complication
- Moon phase
- Movement
- High-beat automatic
- Case material
- Quartz TPT
- Dial type
- Ice blue
- Strap / bracelet
- Alligator leather with folding clasp
- Water resistance
- 50 m
- Limited-edition status
- Limited edition of 250 pieces
Case, dial & bracelet
- Case dimensions
- 44 mm
- Case thickness
- 14.1 mm
- Case material
- Quartz TPT
- Bezel
- Octagonal with 8 hexagonal screws
- Crystal
- Sapphire with internal AR treatment
- Dial
- Ice blue
- Hands
- Mercedes hour hand with Chromalight display
- Indexes
- Applied Arabic numerals with luminous coating
- Bracelet / strap
- Alligator leather with folding clasp
- Clasp / buckle
- Triple-folding clasp with safety catch
- Water resistance
- 50 m
Movement
- Movement / calibre
- Calibre 29C — High-beat automatic
- Movement type
- Manual-winding
- Frequency
- 21,600 vph (3 Hz)
- Power reserve
- 70 hours
- Number of jewels
- 21 jewels
- Complications
- Moon phase
- Functions
- Hours, minutes, seconds, date
- Watchmaker
- Assembled and regulated by a single watchmaker, who signs off the piece before casing.
Production & market
- Production period
- 1984 – 1999
- Limited-edition quantity
- 250 pieces
- 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
Longines HydroConquest 44 mm Ice Quartz sits within Longines's HydroConquest line, introduced in 1984. It carries the house codes established since 1832 — quartz tpt case, ice blue dial and high-beat automatic — and is one of the references collectors use to date the evolution of the collection.
Interesting facts
- The movement's bridges are decorated even where they will never be seen once the watch is cased.
- 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.
More HydroConquest
Longines HydroConquest 39 mm Skeletonised Ceramic
Ref. 68469OR.64
Longines HydroConquest 40 mm Salmon 18k
Ref. 63931OR.95
Longines HydroConquest 44 mm Mother-of-pearl Ceramic
Ref. 12598OR.37
Longines HydroConquest 36 mm Salmon Stainless
Ref. 29984ST.44
Longines HydroConquest 42 mm Slate Quartz
Ref. 35458OR.71