Tudor’s updated Black Bay 58 now costs $4,975 on rubber, and Omega’s blue Seamaster Diver 300M costs $6,300 on the same kind of strap. That’s $1,325 between two steel divers that share more than their prices suggest. Both movements are certified by METAS to the Master Chronometer standard and shrug off magnetic fields of 15,000 gauss, and both watches come with a five-year warranty. They part ways on size, depth rating, finish, and what you see when you look down.
Tudor's Black Bay 58, Ref. M7939A1A0NU-0003, is the smaller diver at 39mm and 200 meters, with the 65-hour MT5400-U for $4,975 on rubber. Omega's Seamaster Diver 300M, Ref. 210.30.42.20.03.001, reaches 42mm and 300 meters on the 55-hour Calibre 8800, from $6,300.
Size, Dial and Feel
The Black Bay 58 is the smaller, flatter watch. Its 39mm steel case is now 11.7mm thick, and Tudor has redrawn the bezel and crown, cut the dial text to two lines, and added hands that pinch at the base. The matte black dial is domed like Tudor’s early divers and sits under a domed sapphire crystal, with a lollipop seconds hand from the same archive. There’s no date. The aluminum bezel insert and 20mm lugs keep it lean, and Tudor’s T-fit clasp allows rapid length adjustment.
The Seamaster is the larger and more fully equipped of the two. Its 42mm steel case is 13.56mm thick and 49.90mm lug to lug, and it carries a blue ceramic bezel with a white enamel diving scale, a polished blue ceramic dial laser-engraved with waves, skeleton hands, a date at 6 o’clock, and a helium escape valve, now with a conical design. On its steel bracelet, it weighs about 194 grams.
It’s also the watch with the longer film career. The Diver 300M has been in the catalog since 1993, and as we covered in our guide to every James Bond watch, a Seamaster has been on 007’s wrist since GoldenEye in 1995.
Movements, Water Resistance and Price
Inside the Tudor is Manufacture Calibre MT5400-U, a self-winding movement certified by COSC and METAS, with a silicon hairspring and a 65-hour power reserve. The case is waterproof to 200 meters behind a solid caseback, and Tudor’s five-year guarantee is transferable, with no registration or maintenance checks required.
The Seamaster runs on the Co-Axial Master Chronometer Calibre 8800, which beats at 3.5 Hz, stores 55 hours, and shows through a sapphire caseback with Omega’s wave edge. The watch is rated to 300 meters, 100 more than the Tudor, and its helium escape valve is meant for professional divers who work from pressure chambers. Omega’s warranty also runs five years.
Price is where they separate. The Black Bay 58 is $4,975 on rubber, and Tudor’s two steel bracelets cost $5,225 and $5,350. The Seamaster in this blue configuration is $6,300 on rubber and $6,700 on its steel bracelet. Put the Tudor on a bracelet, and it still costs less than the Omega on rubber.
With the certifications now the same, this comes down to wrist and use rather than quality. The Black Bay 58 suits smaller wrists, anyone who prefers a dial without a date, and buyers who want to stay under $5,000, which is why it made our list of the best luxury watches under $5,000. The Seamaster suits someone who wants the 300-meter rating, a display back, a date, and a ceramic dial with real presence, along with three decades of Bond history.
Either is a complete dive watch. The Tudor is the compact, vintage-minded diver; the Omega carries more, with a dial and bezel you’ll notice across a room.
| Specification | Detail |
|---|---|
| Tudor reference | M7939A1A0NU-0003 |
| Tudor case | 39mm steel, 11.7mm thick, 20mm lugs |
| Tudor movement | Manufacture Calibre MT5400-U, COSC and METAS, 65 hours |
| Tudor water resistance | 200 meters |
| Omega reference | 210.30.42.20.03.001 |
| Omega case | 42mm steel, 13.56mm thick, 49.90mm lug to lug, 20mm lugs |
| Omega movement | Co-Axial Master Chronometer Calibre 8800, 55 hours |
| Omega water resistance | 300 meters, helium escape valve |
Timely FAQs
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