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Zenith Defy Extreme Glacier 45mm
Ref. 95.9201.9004/25.I001
Sits in Zenith’s upper tier here — more premium than three quarters of the Zenith watches we list, which start at £7,000.
Price range £7,000 to £28,000 across 27 Zenith watches in stock.The Defy Extreme Glacier arrived in 2023 as a run of just 50 pieces, each one built around a bezel and pusher guards carved from pale blue chalcedony — a semi-precious stone chosen for its resemblance to glacial ice, and one that varies naturally in colour and structure between examples, so no two watches are identical in the way they catch the light. What the movement does is genuinely unusual. The El Primero 9004 runs two entirely separate regulating organs: one oscillating at 5 Hz for ordinary timekeeping, a second running at 50 Hz — ten times faster — dedicated solely to the chronograph. That second escapement is what allows the central chronograph hand to complete a full rotation every second and measure elapsed time to the hundredth. The frosted sapphire dial exists to make this legible from above, and the sapphire exhibition caseback allows the twin-escapement architecture to be inspected from behind. Titanium keeps the 45mm case manageable on the wrist, and the quick-change system means the bracelet can be swapped for either of the two included straps — one rubber, one Velcro — without tools, which matters on a watch genuinely rated for 200 metres.
- Reference
- 95.9201.9004/25.I001
- Brand
- Zenith
- Collection
- Defy
- Case size
- 45mm
- Case thickness
- 14.5mm
- Case material
- Titanium
- Case shape
- Round
- Dial
- Silver
- Crystal
- Sapphire
- Movement
- Automatic
- Calibre
- El Primero 9004
- Functions
- Chronograph, Power reserve indicator, Skeleton dial
- Water resistance
- 200m
- Bracelet / strap
- Titanium bracelet
- Strap colour
- White
- Clasp
- Folding clasp
- Lume
- Luminous
- Retailer
- Goldsmiths
Additional specifications
- Power reserve
- 50 hours
Learn more about Zenith
Georges Favre-Jacot founded Zenith in Le Locle in 1865, aged twenty-two, with an idea that was radical for the Swiss industry: bring every trade needed to make a watch — movement, case, dial, hands — under one roof and one management. The integrated manufacture was largely his invention, and the Le Locle site he built is still in use.
The approach produced results at observatory trials, where Zenith accumulated more precision awards than any other manufacture. The name itself came from a calibre Favre-Jacot considered the summit of his work.
Its defining achievement is the El Primero of 1969, developed over seven years and announced in the same year as the Heuer-Breitling consortium's Calibre 11 and Seiko's 6139. It was an integrated automatic chronograph beating at 36,000 vibrations per hour, allowing measurement to a tenth of a second — a frequency almost nothing else matched for decades.
It nearly did not survive. When American owners ordered the mechanical tooling scrapped during the quartz crisis, a watchmaker named Charles Vermot hid the plans, presses, and cams in a walled-off attic. When demand for mechanical chronographs returned, Zenith could restart production because of him. Rolex used the El Primero in the Daytona from 1988 to 2000.
LVMH acquired Zenith in 1999.
- 1865
- Georges Favre-Jacot founds the integrated manufacture at Le Locle.
- 1969
- The El Primero automatic chronograph debuts at 36,000 vph.
- 1975
- Charles Vermot hides the El Primero tooling from destruction.
- 1988
- Rolex adopts the El Primero for the Daytona.
- 1999
- Acquired by LVMH.
Also in 7 collections
This watch appears in the Zenith Defy range (23), Automatic Watches (1,417), Chronograph Watches (1,131), Watches 44mm and Over (810), Sports Watches (667), Silver Dial Watches (630) and Dive Watches (486).
Manufacturer’s guarantee
What the specifications mean
A mechanical watch built to be worn hard and got wet.
Strengths
- 200m water resistance, rated for actual diving
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
- One of Zenith's more premium watches
Worth knowing
- 45mm is a large watch with real presence
- 14.5mm thick, so it will not disappear under a cuff
Zenith Defy Extreme Glacier alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | 95.9201.9004/25.I001 | 3723-170-1A/3A | 5050-12B30-98B |
|---|---|---|---|
| Price | £24,200 | £24,390 | £20,200 |
| Case size | 45mm | 44mm | 45mm |
| Water resistance | 200m | 200m | 300m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Titanium bracelet | Rubber strap | Titanium bracelet |
| Power reserve | 50 hours | — | 120 hours |
| This watch | Closely matched |
|
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 200m it is rated for swimming, snorkelling and recreational diving.
Water resistance explainedWill the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Sapphire, mineral and acrylic comparedDoes it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
Quartz, automatic and solar comparedHow long does it run for when it's not worn?
About 50 hours fully wound — enough to survive a night off the wrist, but not a full weekend.
Cheapest place to buy
Goldsmiths is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
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