Tap the image to enlarge
Zenith Chronomaster Original Steel 38mm Mens Watch Grey
Ref. 03.3400.3610/39.M3200
See more premium optionsHide
Stepping up in Zenith's range
The El Primero movement is the reason this watch exists in the form it takes. Zenith introduced it in 1969 as one of the first automatic chronograph calibres, and the 3610 generation maintains its defining characteristic: a 36,000 vibrations-per-hour beat rate that allows the chronograph to resolve to a tenth of a second, with the central hand sweeping the full dial once every ten seconds. That capability sits here alongside a triple calendar and moonphase, making the watch a genuine grand complication in a case that at 38mm wears closer to a dress watch than a sporting one. The slate-grey sunburst dial is busier than it first appears — day, date, and month apertures share space with three sub-dials and a moonphase at six — but the rose gold-plated hands and indices pull it together against the silver-white counters, and the metallic blue moonphase disc with its polished rose gold moon is the detail that catches angled light most unexpectedly. The exhibition caseback lets the 3610 remain visible, which is worth having when the movement is this well regarded.
- Reference
- 03.3400.3610/39.M3200
- Brand
- Zenith
- Collection
- Chronomaster
- Case size
- 38mm
- Case thickness
- 12.60mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Grey
- Crystal
- Sapphire
- Movement
- Automatic
- Calibre
- El Primero 3610
- Functions
- Chronograph, Date, Small seconds, Moonphase
- Water resistance
- 50m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Silver
- Clasp
- Deployant clasp
- Lume
- Super-LumiNova
- Retailer
- Mappin & Webb
Additional specifications
- Power reserve
- 60 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 5 collections
This watch appears in the Zenith Chronomaster range (19), Stainless Steel Watches (2,833), Automatic Watches (1,417), Chronograph Watches (1,131) and Grey Dial Watches (222).
Temporarily out of stock
Mappin & Webb is not currently taking orders for this reference. Last listed as available on 26 September 2026. Stock is checked nightly and this page updates when it returns.
What the specifications mean
A mechanical watch for everyday wear.
Strengths
- 38mm suits most wrists
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
Worth knowing
- 50m suits rain and handwashing, not swimming
Zenith Chronomaster Original Steel alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | 03.3400.3610/39.M3200 | H9761 | 81005-11-3154-1CM |
|---|---|---|---|
| Price | £13,100 | £13,800 | £12,800 |
| Case size | 38mm | 38mm | 38mm |
| Water resistance | 50m | 50m | 100m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Stainless steel bracelet | Ceramic bracelet | Stainless steel bracelet |
| Power reserve | 60 hours | 70 hours | 46 hours |
| This watch | Closely matched |
|
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Showering yes, swimming no. 50m covers splashes and brief immersion, but a swimming stroke generates well above the pressure that figure describes.
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 60 hours fully wound — enough to survive a night off the wrist, but not a full weekend.
Is it a men's or women's watch?
Listed as men's, though at 38mm it sits in the range that suits anyone.
More Zenith watches like the Chronomaster Original Steel
In stock, and close on style and price
