Watch Almanac
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
Wrist flat: 55.1 mmLug-to-lug: 49.9 mm

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.

WristFlat width (est.)Fit
6"47.2 mmLugs overhang
6.5"51.2 mmSnug, lugs near the edge
7"55.1 mmIdeal fit
7.5"59.1 mmIdeal fit
8"63 mmIdeal 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.

Sources