Tudor Black Bay 58 vs Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 mm
Both are steel dive watches with in-house movements and METAS-level certification, but they suit different wrists and budgets. The Tudor Black Bay 58 is smaller at 39mm, thinner, and cheaper at $5,225.00 at Brown & Co. as of November 3, 2026. The Omega Seamaster Diver 300M is 42mm, has a ceramic bezel, a helium escape valve, and 300m water resistance, at $5,762.00 at PrestigeTime.com as of November 3, 2026. Buy the Tudor for a compact everyday diver and the Omega for a larger, more technical dive watch.
Today the Tudor Black Bay 58 costs $1,250.00 less at its best price.
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Tudor Black Bay 58
Choose the Black Bay 58 if you want a 39mm case that fits smaller wrists, a 70-hour power reserve, and the lower price of $5,225.00 at Brown & Co.
- 39mm case wears well on smaller wrists
- 70-hour power reserve beats the Omega's 55 hours
- Lower price: $5,225.00 at Brown & Co.
- T-fit clasp allows quick bracelet adjustment on the fly
- Classic rivet-style bracelet and matte black dial
What separates them
| Tudor Black Bay 58 | Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 mm | |
|---|---|---|
| Case diameter | 39mm | 42mm |
| Water resistance | 200m | 300m |
| Bezel insert | Anodized aluminum | Polished black ceramic |
| Power reserve | 70 hours | 55 hours |
| Magnetic resistance | Not rated to a gauss figure | 15,000 gauss |
| Helium escape valve | None | Yes, at 10 o'clock |
| Certification | COSC and METAS | COSC and METAS Master Chronometer |
| Price as of November 3, 2026 | $5,225.00 at Brown & Co. |
Price history
- Tudor Black Bay 58: lowest $4,200.00 on Nov 3 at Amazon; $4,975.00 on Nov 4.
- Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 mm: lowest $5,450.00 on Nov 4 at WatchMaxx.com.
Prices at every store
Tudor Black Bay 58
- Brown & Co.New
In stock
$5,225.00+ $25.00 shippingObserved Nov 3, 2026, 6:49 PM - AmazonNew
Availability unknown
As an Amazon Associate, Deal.ai earns from qualifying purchases.
$4,200.00Free shippingObserved Nov 3, 2026, 6:48 PM - Williams Jewelers of EnglewoodNew
Availability unknown
$4,975.00Observed at 7:43 PM
Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 mm
- WatchMaxx.comNew
In stock
$5,450.00Free shippingObserved at 7:43 PM - PrestigeTime.comNew
In stock
$5,762.00Free shippingObserved at 7:43 PM - eBayNew
Availability unknownSold by watchmaxx
$6,032.50Observed at 7:43 PM - AmazonNew
Availability unknown
As an Amazon Associate, Deal.ai earns from qualifying purchases.
$9,490.00Free shippingObserved Nov 3, 2026, 6:48 PM
Specs compared
| Spec | Tudor Black Bay 58 | Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 mm |
|---|---|---|
| Case Material | Steel | Steel |
| Movement | Automatic | Automatic |
| Power Reserve | 70 hour | 55 h |
| Crystal | Domed sapphire crystal | Sapphire crystal |
| Case Size | 39mm case | 42mm case |
| Case Width | 39mm | — |
| Water Resistant | 200M | — |
| Bezel | Unidirectional | — |
| Dial Colour | Black | — |
| Bracelet/Strap | Steel | — |
| COSC |
What reviewers say
Tudor Black Bay 58
Owners and reviewers consistently praise the Black Bay 58 for its wearable size, solid build and accurate in-house movement. Common complaints focus on the aluminum bezel and the vintage-style rivet bracelet.
- Comfortable 39mm case that wears well on most wrists
- Strong accuracy and long power reserve
- Good value among Swiss dive watches
- Secure T-fit clasp
- Aluminum bezel insert marks easily
- Rivet bracelet styling not to everyone's taste
- No date window
- Bracelet may be short for large wrists
Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 mm
Owners rate it highly, with a 5 out of 5 average from 5 ratings. Praise centers on build quality, the ceramic dial and accuracy.
Questions and answers
- Which is better for a small wrist?
- The Tudor Black Bay 58. Its 39mm case is 3mm smaller than the Omega's 42mm and sits lower on the wrist.
- Is the Omega worth the extra $537?
- If you want a ceramic bezel, 300m water resistance, a helium escape valve, and 15,000-gauss magnetic resistance, yes. If you want a smaller case and a longer power reserve, the Tudor is the better buy.
- Which has the longer power reserve?
- The Tudor, at 70 hours versus 55 hours for the Omega 8800. Set the Tudor down on Friday and it should still run Monday morning.
- Can I swim and dive with both?
- Yes. The Tudor is rated to 200m and the Omega to 300m. Both are screw-down crown divers, though only the Omega has a helium escape valve for saturation diving.
- Which movement is more resistant to magnets?
- The Omega. Its Master Chronometer 8800 is certified to 15,000 gauss, while Tudor does not publish a gauss rating for the MT5400-U.
- Do both come with a steel bracelet?
- Yes. The Tudor comes on a 3-link rivet-style steel bracelet with a T-fit clasp. The Omega comes on a steel bracelet with a fold clasp.