Two Sizes, One Classic
The Tudor Black Bay 36 and 41 are the brand’s answer to the Rolex Explorer — clean, versatile, everyday watches without dive bezels or chronographs. They’re the Tudors you wear to the office Monday and the beach Saturday. But the 5mm size difference creates two genuinely different wearing experiences.
Specifications Compared
| Spec | BB 36 (79500) | BB 41 (79540) |
|---|---|---|
| Diameter | 36mm | 41mm |
| Lug-to-lug | 43mm | 48mm |
| Thickness | 10.6mm | 11.2mm |
| Movement | Cal. T600 (38h reserve) | Cal. T601 (38h reserve) |
| WR | 150m | 150m |
| Crystal | Sapphire, flat | Sapphire, flat |
| Bracelet | Steel (riveted style) or leather/fabric | Steel (riveted style) or leather/fabric |
| Dial Options | Black, blue, silver | Black, blue, silver |
| Retail | $2,575 | $2,725 |
The 36mm Case
At 36mm × 43mm L2L, the BB36 is one of the smallest luxury sports watches currently available. It wears like a vintage Rolex Explorer — compact, discreet, and proportionally perfect on 5.5-7″ wrists. The riveted bracelet adds vintage texture without bulk. At 10.6mm thin, it slides under any shirt cuff.
The BB36 appeals to: minimalists, vintage enthusiasts, small-wrist wearers, and anyone who believes the best watch is the one you forget you’re wearing.
The 41mm Case
At 41mm × 48mm L2L, the BB41 has modern proportions that fill a 7-8″ wrist comfortably. The larger dial is easier to read, and the additional 0.6mm of thickness is imperceptible on wrist. The 41mm is the “safe” choice for most modern buyers — it looks substantial without being oversized.
The BB41 appeals to: daily wearers who want more wrist presence, larger-wristed buyers, and those transitioning from 42-44mm watches who want to size down without feeling like they went too small.
Movement Note
Both use Tudor’s T600/T601 calibers — based on the Sellita SW200 with a shortened 38-hour power reserve. This is the BB36/41’s weakness: competing watches at this price (Tissot PRX at $650, Longines Spirit at $2,350) offer 72-80 hour reserves. If power reserve matters, the Black Bay 58 (MT5402, 70h) is worth the $1,000 premium.
Which One?
- 36mm if: Wrist under 7″, you value vintage proportions, you want the most discreet Tudor, or you already own a larger sports watch and need a slim complement.
- 41mm if: Wrist over 6.5″, you prefer modern sizing, or this is your only watch (the 41mm’s larger dial is more versatile across casual and dress contexts).
Frequently Asked Questions
BB36 vs Rolex Explorer 124270?
Both are 36mm steel time-only watches. The Explorer has a superior movement (Cal. 3230, 70h, Chronergy) and 904L steel, but costs $4,775 more ($7,350 vs $2,575). The Tudor is 70% of the Explorer experience at 35% of the price. If budget matters, Tudor. If movement quality and Rolex cachet matter, Explorer.
Can I dress up the BB36/41?
Yes — swap the bracelet for a leather or fabric strap (Tudor’s quick-release system makes this tool-free). On brown alligator, the BB36 looks like a proper dress watch. On the steel bracelet, it’s sporty-casual.
Do you carry Black Bay 36/41?
Yes — our Tudor collection at DR.WATCH includes Black Bay 36mm and 41mm references with correct proportions, riveted-style bracelets, and Swiss automatic movements. Free worldwide shipping + 1-year warranty.
