Encyclopedia / Tudor / Black Bay GMT
Current deal · verified Oct 19, 2026, 10:22 PM ET
$4,500 Tudor retail $5,275
Save $775 (15%) · new · Jomashop
Ref. M79830RB-0001 · 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 $4,895 (10:28 PM ET). 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 | $3,625 | View | Oct 19, 2026 |
| Jomashop | new | Yes* | $4,500 | View | Oct 19, 2026 |
| WatchMaxx | new | Yes* | $4,895 | View | Oct 19, 2026 |
Fixed-price (buy-now) asking prices in USD for ref. M79830RB-0001, 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 |
|---|---|---|
| Tudor US retail | $5,275 (ref. M79830RB-0001) | tudorwatch.com |
| New at Jomashop | $4,500 | Jomashop |
| New at WatchMaxx | $4,895 | WatchMaxx |
| Pre-owned (Chrono24 asks) | about $3,300 – $4,500 (median ~$3,800, 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 |
|---|---|---|
| M79830RB-0001 | Black Bay Automatic Black Dial Men's GMT Pepsi Bezel Watch | $5,275 |
Which one I'd pick
Which one: I priced the black-dial m79830rb-0001 on the riveted bracelet. There's also an opaline-dial version (M79830RB-0010).
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 (M79830RB-0001) 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
- Rolex GMT-Master II: The Pepsi icon, far more expensive. (40 mm Oystersteel, Calibre 3285, retail $11,800 (126710BLNR-0003 and 126710GRNR-0004, Oyster bracelet))
- Tudor Black Bay 58 GMT: Smaller 39 mm GMT. (39 mm Stainless Steel, Tudor Calibre MT5450-U, retail $5,525 (list price per Jomashop & WatchMaxx))
- Longines Spirit Zulu Time: A Swiss GMT for less. (39 mm stainless steel, Calibre L844.4, retail $3,550 (L3.802.4.63.6))
History
Tudor says the name 'The Tudor' was first registered as a brand in 1926 on behalf of Rolex founder Hans Wilsdorf.
The Black Bay GMT m79830rb-0001 has a 41 mm steel case, a bidirectional 48-notch bezel with 24-hour graduations in matte blue and burgundy, Manufacture Calibre MT5652 with about 70 hours of power reserve, and 200 m water resistance, per Tudor.
Specifications
| Brand | Tudor |
|---|---|
| Model | Black Bay GMT |
| Key references | M79830RB-0001 |
| Launch year | Not confirmed |
| Case | 41 mm steel |
| Movement | Manufacture Calibre MT5652 (GMT), self-winding |
| Power reserve | About 70 hours |
| Water resistance | 200 m |
| Approx. US retail (Oct 2026) | $5,275 (m79830rb-0001, per Tudor) |
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
- Matte blue/burgundy 24-hour bezel
- Manufacture Calibre MT5652 GMT, ~70 h
- 200 m water resistance
FAQ
How much is the Tudor Black Bay GMT?
Retail: $5,275. New, the best verified price was $4,500 at Jomashop (checked Oct 19, 2026, 10:22 PM ET). Pre-owned asks on Chrono24 mostly ran $3,300 to $4,500.
What movement does the Black Bay GMT use?
The M79830RB-0001 checked here uses the Manufacture Calibre MT5652 (GMT), self-winding with about 70 hours of power reserve.
How big is the Black Bay GMT?
41 mm steel.
Is the Black Bay GMT water resistant?
Yes, it's rated to 200 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.