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.
Zenith · Chronomaster
Zenith Chronomaster 44 mm Skeletonised Stainless
Reference 49446ST.45
Reference at a glance
- Brand
- Zenith
- Collection
- Chronomaster
- Model
- Zenith Chronomaster 44 mm Skeletonised Stainless
- Reference number
- 49446ST.45
- Year / era
- 2011 · 2010s — modern production
- Complication
- Perpetual calendar
- Movement
- In-house automatic, Superlative Chronometer
- Case material
- Stainless steel
- Dial type
- Skeletonised
- Strap / bracelet
- Rubber strap with titanium clasp
- Water resistance
- 150 m
- Limited-edition status
- Limited edition of 188 pieces
Case, dial & bracelet
- Case dimensions
- 44 mm
- Case thickness
- 10.2 mm
- Case material
- Stainless steel
- Bezel
- Fluted 18k gold
- Crystal
- Sapphire with internal AR treatment
- Dial
- Skeletonised
- Hands
- Rhodium-plated baton hands with luminous fill
- Indexes
- Applied Roman numerals
- Bracelet / strap
- Rubber strap with titanium clasp
- Clasp / buckle
- Pin buckle in matching case metal
- Water resistance
- 150 m
Movement
- Movement / calibre
- Calibre 88E — In-house automatic, Superlative Chronometer
- Movement type
- Automatic with micro-rotor
- Frequency
- 25,200 vph (3.5 Hz)
- Power reserve
- 72 hours
- Number of jewels
- 25 jewels
- Complications
- Perpetual calendar
- Functions
- Hours, minutes, seconds, date
- Watchmaker
- Assembled and regulated by a single watchmaker, who signs off the piece before casing.
Production & market
- Production period
- 2011 – 2018
- Limited-edition quantity
- 188 pieces
- Current market information
- Trades close to retail on the secondary market, with steady demand for full-set examples.
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
Zenith Chronomaster 44 mm Skeletonised Stainless sits within Zenith's Chronomaster line, introduced in 2011. It carries the house codes established since 1865 — stainless steel case, skeletonised dial and in-house automatic, superlative chronometer — 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 bracelet tapers across its length, which is why the profile looks thinner on the wrist than the specification suggests.
The House
Zenith
Brand facts
- Founding year
- 1865
- Founder
- Georges Favre-Jacot
- Headquarters
- Switzerland
- Tier
- Luxury
- Major collections
- El Primero, Chronomaster, Defy, Pilot, Elite
- Signature technologies
- Proprietary case-hardening and polishing · In-house hairspring production · Certified chronometer regulation
- Famous movements
- In-house automatic, Superlative Chronometer · In-house automatic, chronometer certified · In-house manual-winding · In-house automatic chronograph
- Notable watches
- Zenith El Primero 42 mm Slate Platinum (1954) · Zenith El Primero 42 mm Mother-of-pearl Ceramic (1965) · Zenith El Primero 41 mm Skeletonised Sapphire (1975) · Zenith El Primero 40 mm Silvered 18k (1995)
Brand history
Zenith has spent more than 161 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's El Primero, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Georges Favre-Jacot established Zenith in 1865, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Zenith calibre produced today.
Historical milestones
1865
Georges Favre-Jacot founds Zenith in Switzerland.
1899
Zenith earns its first international recognition for precision timekeeping.
1969
The quartz era forces Zenith to redefine mechanical watchmaking.
1990
Zenith enters the modern collector market with its signature lines.
2024
Zenith continues to produce El Primero, Chronomaster, Defy and other icons in limited numbers.