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What does the 79250BM reference mean?
The title’s “79250BM” does not match the reference numbers shown in TUDOR’s official materials. The brand’s current slate-grey Black Bay Bronze pages list M79250BA-0001 and M79250BA-0002. TUDOR’s launch press release uses the earlier reference 79250BA. The available official sources do not explain the “BM” suffix, so it should not be treated as a verified reference without checking the watch and its documentation.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
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Tudor Heritage Black Bay Bronze Men's Watch M79250BM-0003 | $4,699.00 | Buy on Amazon |
| 2 |
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Tudor Black Bay Bronze Automatic Men's Watch M79250BA-0001 | $5,379.99 | Buy on Amazon |
| 3 |
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Tudor Divers Black Bay Bronze Grey Dial M79250BA-0002 | $4,700.00 | Buy on Amazon |
| 4 |
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Tudor Heritage Black Bay Men's Watch 79230R | $4,200.00 | Buy on Amazon |
| 5 |
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Tudor Heritage Black Bay S&G Automatic 41 mm Men's Watch M79733N-0007 | $5,075.00 | Buy on Amazon |
TUDOR describes the Black Bay Bronze as a 43 mm divers’ watch inspired by its naval history. The slate-grey versions pair a bronze case and bezel with a slate-grey dial and the MT5601 movement, according to the brand’s Black Bay Bronze family page.
What movement is in the Tudor Black Bay Bronze?
The current M79250BA models use TUDOR Manufacture Calibre MT5601, a self-winding mechanical movement with a bidirectional rotor. TUDOR lists the movement as COSC-certified and gives an approximate 70-hour power reserve. Its family page describes a variable-inertia balance, a traversing bridge fixed at two points, and a non-magnetic silicon balance spring.
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TUDOR’s 2019 launch release for reference 79250BA lists a frequency of 28,800 beats per hour (4 Hz), 25 jewels, and a movement thickness of 6.5 mm. These are specifications stated in that launch document, rather than results of independent testing. The same release gives the calibre’s diameter as 33.8 mm and its reserve as approximately 70 hours.
Tudor Black Bay Bronze specifications
| Specification | Detail |
|---|---|
| Case | 43 mm satin-finished bronze, with a bronze-coloured PVD-treated steel caseback, per TUDOR |
| Thickness | 14.6 mm, per TUDOR |
| Lug width | 23 mm, per TUDOR |
| Water resistance | 200 m (660 ft), per TUDOR |
| Bezel | Unidirectional rotating bronze bezel with a 60-minute graduated matt slate-grey anodised aluminium disc, per TUDOR |
| Dial and crystal | Domed slate-grey dial and domed sapphire crystal, per TUDOR |
| Movement | Manufacture Calibre MT5601, self-winding mechanical, bidirectional rotor, COSC-certified, per TUDOR |
| Power reserve | Approximately 70 hours, per TUDOR |
| Guarantee | Five years, transferable, without registration or periodic maintenance checks required; confirm regional terms and purchase eligibility with TUDOR |
M79250BA-0001 vs. M79250BA-0002
The documented current versions share the same main watch specifications; the listed difference is the strap configuration. TUDOR’s pages displayed the same U.S. suggested retail price when accessed on 2026-10-07.
Rank #2
- Tudor Black Bay Bronze Automatic Men's Watch M79250BA-0001
| Reference | Strap | Displayed U.S. suggested retail price |
|---|---|---|
| M79250BA-0001 | Black leather | $5,425, per TUDOR’s product page accessed 2026-10-07; subject to change |
| M79250BA-0002 | Fabric | $5,425, per TUDOR’s product page accessed 2026-10-07; subject to change |
TUDOR reserves the right to change prices and models, so the displayed suggested retail figure is not a guaranteed transaction price. Compare the exact reference, included strap, condition, seller, price at purchase, and warranty eligibility rather than assuming the strap difference is the only consideration in a particular listing.
Bronze case and patina
TUDOR says the case uses a high-performance aluminium bronze alloy and develops a characteristic patina over time. Patina is part of the material’s changing appearance, but the brand’s cited information does not specify how quickly it develops or what colour an individual watch will reach. The brand says it introduced its first bronze model in 2016.
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What to check before buying or choosing a strap
- Match the reference: Reconcile any “79250BM” listing with the reference on the watch and its paperwork. The current official slate-grey references are M79250BA-0001 and M79250BA-0002.
- Confirm what is included: Check whether the watch comes with the black leather or fabric strap, and assess its condition alongside the case and other components.
- Check seller and guarantee: Verify seller status, current price, and regional guarantee coverage and eligibility directly at purchase time. TUDOR’s product pages provide purchase and retailer actions; they do not establish the status of an unrelated marketplace listing.
- Verify replacement strap fit: TUDOR lists a 23 mm lug width, which is a useful starting point for an accessory search, not proof that every 23 mm strap fits correctly. Confirm the end shape, spring bars, buckle, and clearance for the specific strap and watch.
TUDOR’s design-history notes say the dial draws on the brand’s 1950s divers’ watches and that its angular “Snowflake” hands appeared in the 1969 catalogue. These are the manufacturer’s descriptions of the design’s inspiration and history.
Quick Recap
Best Value
- Tudor Heritage Black Bay S&G Automatic 41 mm Men's Watch M79733N-0007
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
