Encyclopedia / Omega / Seamaster 300
Current deal · verified Oct 19, 2026, 10:22 PM ET
$6,800 List $8,000
Save $1,200 (15%) · new · Jomashop
Ref. 234.30.41.21.01.001 · In stock (per Jomashop)
Brand new from Jomashop, a grey-market (non-authorized) dealer, so expect the store's warranty (Jomashop lists '2 Year Jomashop Warranty') rather than the brand's. Also checked: WatchMaxx $6,800 (10:28 PM ET). 'List' is the retail figure the dealer displays; I could not confirm it on the brand's own US site. Prices change fast; check the store before you buy.
Price comparison: fixed-price listings
| Store | Condition | Box & papers | Asking price | Link | Checked |
|---|---|---|---|---|---|
| Watchfinder | pre-owned | Yes | $5,250 | View | Oct 19, 2026 |
| WatchMaxx | new | Yes* | $6,800 | View | Oct 19, 2026 |
| Jomashop | new | Yes* | $6,800 | View | Oct 19, 2026 |
| Chrono24 marketplace seller | new | Not stated | $6,995 | View | Oct 19, 2026 |
Fixed-price (buy-now) asking prices in USD for ref. 234.30.41.21.01.001, cheapest new and cheapest pre-owned with box and papers per store, sorted low to high and checked Oct 19, 2026 (ET). Buy-now listings only. Pre-owned listings are shown only when the listing states box and papers. * New from a grey-market dealer: comes boxed, but the warranty card may be the dealer's rather than the brand's. Chrono24 rows are individual third-party marketplace sellers. Prices change fast; confirm with the store.
What it really costs
| Market | Price | Source |
|---|---|---|
| List price per Jomashop & WatchMaxx | $8,000 | jomashop.com |
| New at Jomashop | $6,800 | Jomashop |
| New at WatchMaxx | $6,800 | WatchMaxx |
| Pre-owned (Chrono24 asks) | about $4,850 – $7,200 (median ~$5,750, 60 listings sampled) | Chrono24 |
All prices in USD, checked Oct 19, 2026 (ET). Pre-owned ranges are the middle 80% of asking prices on the first Chrono24 results page for that ref (about 60 listings, used and some unworn), fixed-price listings only. Grey-market = brand-new from a non-authorized dealer.
Buying guide
Key references
| Ref. | What it is | US retail |
|---|---|---|
| 234.30.41.21.01.001 | Seamaster Automatic Chronometer Black Dial Men's Watch | $8,000 |
Which one I'd pick
300 or 300M? The Seamaster 300 is the heritage design with a sapphire display back; the Diver 300M is the wave-dial Bond watch and is cheaper. Pick the 300 for the vintage look.
What to check before you buy
- Warranty: grey-market new watches usually carry the dealer's warranty, not the brand's. Ask which one you get and whether the brand's warranty card is included.
- Exact reference: dial colour, size and strap change the price. Match the full ref (234.30.41.21.01.001) before comparing deals.
- Fakes and red flags: be wary of prices far below the ranges above, stock photos only, or sellers who won't show the caseback, serial and papers.
Alternatives worth a look
- Omega Seamaster Diver 300M: The wave-dial Bond diver, cheaper. (42 mm stainless steel, Calibre 8800, retail $6,700 (steel bracelet; blue .03.001 or black .01.001))
- Tudor Black Bay 58: Vintage-style diver from Tudor. (39 mm stainless steel, Calibre MT5400-U, retail From $4,975 (rubber); $5,225–$5,350 on bracelet)
- Rolex Submariner: The benchmark diver, if you can pay up. (41 mm Oystersteel, Calibre 3230 (no-date) / 3235 (date), retail $10,050 (124060); $11,350 (126610LN))
History
The Seamaster line dates to 1948. In 1957 Omega added the Seamaster 300, a watch designed for professional divers.
The current Seamaster 300 (234.30.41.21.01.001) is a 41 mm steel diver with a black ceramic bezel ring, Omega Calibre 8912, 60 hours of power reserve and 300 m water resistance, per Jomashop's listing.
Specifications
| Brand | Omega |
|---|---|
| Model | Seamaster 300 |
| Key references | 234.30.41.21.01.001 |
| Launch year | 1957 |
| Case | 41 mm Stainless Steel |
| Band width | 21 mm |
| Crystal | Scratch Resistant Sapphire |
| Caseback | Transparent |
| Bezel | Uni-directional Rotating |
| Bezel material | Stainless Steel with an inlaid Black Ceramic Ring |
| Dial | Black |
| Strap/bracelet | Stainless Steel |
| Functions | Hour, Minute, Second, Co-Axial Escapement, Chronometer |
| Movement | Omega Calibre 8912, automatic |
| Power reserve | About 60 hours |
| Water resistance | 300 m |
| Approx. US retail (Oct 2026) | $8,000 (list price per Jomashop & WatchMaxx) |
Specs from the retailer (Jomashop/WatchMaxx) or brand product page linked above for the main reference; see our research notes for which. Retail prices are list prices, not market value, and change often.
Highlights
- Unidirectional bezel with black ceramic ring
- Omega Calibre 8912, 60 h
- 300 m water resistance
FAQ
How much is the Omega Seamaster 300?
List price per Jomashop & WatchMaxx: $8,000. New, the best verified price was $6,800 at Jomashop (checked Oct 19, 2026, 10:22 PM ET). Pre-owned asks on Chrono24 mostly ran $4,850 to $7,200.
What movement does the Seamaster 300 use?
The 234.30.41.21.01.001 checked here uses the Omega Calibre 8912 (automatic) with about 60 hours of power reserve.
How big is the Seamaster 300?
41 mm Stainless Steel.
Is the Seamaster 300 water resistant?
Yes, it's rated to 300 m.
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Get the free weekly issuePrices and availability last checked Oct 19, 2026. No affiliate links: I don't earn anything if you buy. Sources are listed in our research notes and linked above.