Tudor
Black Bay Chrono
Ref. M79360N
- Case diameter
- 41 mm
- Manufacturer spec
- Lug-to-lug
- 49.9 mm
- Measured in a published review
- Thickness
- 14.4 mm
- Measured in a published review
- Lug width
- —
- Not published
Retail price $6,875 (US, Oct 2026)
Ideal fit
How the Black Bay Chrono wears
Its lugs reach 8.9 mm past the 41 mm case, more than the 7.1 mm typical across the almanac, so it wears larger than its diameter suggests.
On our fit model it sits best on wrists from 7" to 8.25" (17.8–21.0 cm); below 7" the lugs start to reach the edge of the wrist.
At 14.4 mm thick it is thicker than 71% of the 24 other chronograph watches we've measured, so expect it to sit tall on the wrist.
Will the Black Bay Chrono fit your wrist?
With a 49.9 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.
| Wrist | Flat width (est.) | Fit |
|---|---|---|
| 6" | 47.2 mm | Lugs overhang |
| 6.5" | 51.2 mm | Snug, lugs near the edge |
| 7" | 55.1 mm | Ideal fit |
| 7.5" | 59.1 mm | Ideal fit |
| 8" | 63 mm | Ideal fit |
Specifications
- Reference
- M79360N
- Collection
- Black Bay Chrono
- Status
- In production
- Introduced
- 2021
- Case material
- stainless steel
- Crystal
- sapphire
- Water resistance
- 200 m
- Bezel
- fixed steel bezel, black anodised aluminium tachymetric insert
- Dial
- black with silver counters (also opaline 'panda')
- Strap / bracelet
- 3-link rivet-style steel bracelet, T-fit clasp
- Style
- Chronograph, Sport
Movement
- Caliber
- Tudor MT5813
- Type
- automatic
- Power reserve
- 70 hours
- Frequency
- 28,800 vph (4 Hz)
- Accuracy
- COSC
Watches that wear the same size
Other watches within 1.5 mm of its lug-to-lug.
- OmegaSeamaster Diver 300M210.30.42.20.01.001
- Case
- 42 mm
- Lug-to-lug
- 49.9 mm
- Thick
- 13.6 mm
- HamiltonVentura QuartzH24411732
- Case
- 32 mm
- Lug-to-lug
- 50 mm
- Thick
- 9.3 mm
- OmegaSpeedmaster Dark Side of the Moon310.92.44.50.01.001 · “Dark Side of the Moon”
- Case
- 44.3 mm
- Lug-to-lug
- 50 mm
- Thick
- 13 mm
- Patek PhilippeAquanaut 5168G5168G-001
- Case
- 42.2 mm
- Lug-to-lug
- 49.8 mm
- Thick
- 8.3 mm
- RolexExplorer II216570 · “Polar (white dial)”
- Case
- 42 mm
- Lug-to-lug
- 50 mm
- Thick
- 12.5 mm
- RolexExplorer II226570
- Case
- 42 mm
- Lug-to-lug
- 50 mm
- Thick
- 12.5 mm