Black Bay 58 925

Ref. M79010SG

Case diameter: 39 mm; Manufacturer spec
Lug-to-lug: 47 mm; Measured in a published review
Thickness: 12.7 mm; Measured in a published review
Lug width: —; Not published

Retail price $5,600 (US, Oct 2026)

Your wristIdeal fit

Wrist flat: 55.1 mmLug-to-lug: 47 mm

How the Black Bay 58 925 wears

Its lugs add 8 mm to the 39 mm case, close to the 7.1 mm typical across the almanac, so its diameter is a fair guide to how it wears.

On our fit model it sits best on wrists from 6.5" to 7.75" (16.5–19.7 cm); below 6.5" the lugs start to reach the edge of the wrist.

At 12.7 mm thick it is slimmer than 61% of the 79 other dive watches we've measured, so it slides under a cuff more easily than most.

Will the Black Bay 58 925 fit your wrist?

With a 47 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	Ideal fit
7"	55.1 mm	Ideal fit
7.5"	59.1 mm	Ideal fit
8"	63 mm	Wears small

Specifications

Reference: M79010SG
Collection: Black Bay 58
Status: In production
Introduced: 2021
Case material: 925 silver
Crystal: domed sapphire
Water resistance: 200 m
Bezel: unidirectional rotatable, 925 silver with matt taupe anodised aluminium insert
Dial: taupe
Strap / bracelet: brown leather strap with 925 silver buckle
Style: Dive

Movement

Caliber: Tudor MT5400
Type: automatic
Power reserve: 70 hours
Frequency: 28,800 vph (4 Hz)
Jewels: 27
Accuracy: COSC

Black Bay 58 925

How the Black Bay 58 925 wears

Will the Black Bay 58 925 fit your wrist?

Specifications

Movement

More Black Bay 58 references

Watches that wear the same size

Sources