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Oris Aquis Date 43.5mm Stainless Steel
Ref. 173377304157
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Stepping up in the same colour and case shape
The Aquis Date sits at the serious end of Oris's dive line, designed to function well below recreational depths while remaining a practical daily watch rather than a purely technical instrument. The green ceramic bezel insert and sunburst dial work together with an unusual degree of visual consistency — the dial shifts tone depending on angle and light, the bezel holds its colour permanently. At 43.5mm the watch reads larger on paper than it does in practice. The lugs curve sharply downward and the integrated first links pivot to follow the wrist, which between them bring a 50mm lug-to-lug span into contact with the arm in a way that mimics something closer to a 41mm wearing experience. The screw-in crown guard adds protection without throwing the profile off noticeably, and 12.8mm keeps it manageable under a cuff for a watch rated this deep. The Calibre 733 — Oris's name for the Sellita SW200-1 — is not the most original movement in Swiss watchmaking, but it is among the most consistently reliable and the most straightforwardly serviceable, which matters more in a working dive watch than a complication count does. The lume is bright and resolves blue in the dark, with a matching pip at the bezel's zero marker so the elapsed-time reading holds in poor visibility.
- Reference
- 173377304157
- Brand
- Oris
- Collection
- Aquis
- Case size
- 43.5mm
- Case thickness
- 12.8mm
- Lug width
- 24mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Green
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Automatic
- Calibre
- Oris 733
- Functions
- Date
- Water resistance
- 300m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Black
- Clasp
- Folding clasp
- Lume
- Super-LumiNova
- Condition
- Pre-owned
- Retailer
- Mappin & Webb
Additional specifications
- Lug-to-lug
- 50mm
- Power reserve
- 38 hours
- Origin
- Swiss made
Learn more about Oris
Paul Cattin and Georges Christian took over an empty factory in Hölstein in 1904 and named the company after a nearby gorge. It stayed independent, and stayed in that valley, for its entire history.
Oris built its reputation on volume mechanical watches made properly. By the 1960s it was among the largest Swiss employers in the sector, producing hundreds of thousands of movements a year. Its most curious historical footnote is regulatory: Swiss law restricted the number of jewels a watch could contain under certain classifications, and Oris fought a decade-long legal battle to be permitted to fit lever escapements — winning in 1968.
The quartz crisis nearly ended it. The company was bought out of the ASUAG conglomerate in 1982 by two managers, Rolf Portmann and Ulrich Herzog, who took it back to mechanical watches exclusively at precisely the moment the rest of the industry was abandoning them.
That independence remains the point. Oris is one of the few Swiss houses of any scale with no group ownership, and it competes on value rather than prestige — dive watches, pilot's watches, and the Big Crown line descended from its 1938 pointer calendar. The house developed its own Calibre 400 family from 2020, offering five-day power reserves and ten-year service intervals at prices well below the norm for in-house movements.
- 1904
- Paul Cattin and Georges Christian found Oris in Hölstein.
- 1938
- The Big Crown pointer calendar is introduced.
- 1968
- Wins the legal fight to use lever escapements.
- 1982
- A management buyout returns the company to independence.
- 2020
- The in-house Calibre 400 launches.
Also in 6 collections
This watch appears in Stainless Steel Watches (3,102), Automatic Watches (1,425), Sports Watches (714), Dive Watches (494), Green Dial Watches (414) and Pre-Owned, Ex-Display & Vintage Watches (211).
What the specifications mean
A mechanical watch built to be worn hard and got wet.
Strengths
- 300m water resistance, rated for actual diving
- 50mm lug-to-lug keeps the 43.5mm case wearable
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
- Sits in the lower half of Oris's range as we list it
Worth knowing
- 43.5mm sits at the larger end
- 38-hour reserve means winding it after a day off
Compare alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | 173377304157 | L38414966 | H82555130 |
|---|---|---|---|
| Price | £1,450 | £1,300 | £1,265 |
| Case size | 43.5mm | 44mm | 43mm |
| Water resistance | 300m | 300m | 300m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Stainless steel bracelet | Stainless steel bracelet | Stainless steel bracelet |
| Power reserve | 38 hours | 64 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 300m it is rated for swimming, snorkelling and recreational diving.
Will the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Does it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
How long does it run for when it's not worn?
About 38 hours fully wound — so it will usually stop if you leave it off overnight.
What size strap does it take?
24mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Will it fit my wrist?
Lug-to-lug is 50mm, which suits wrists from roughly 16.5cm (6½ inches) upward.
Lug-to-lug decides fit more than case diameter does.
Is it a men's or women's watch?
Listed as men's.
Cheapest place to buy
Mappin & Webb at £1,450, pre-owned. No UK retailer we track lists this reference new.
Is this available new?
Not from the UK retailers we track. This reference is listed as pre-owned only, at £1,450 from Mappin & Webb. A pre-owned watch has been worn, and is normally sold under the retailer’s own warranty rather than the manufacturer’s.
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