Black Bay 68

Ref. M7943A1A0NU-0001

Case diameter: 43 mm; Manufacturer spec
Lug-to-lug: 51.8 mm; Unverified
Thickness: 13.6 mm; Manufacturer spec
Lug width: 22 mm; Manufacturer spec

Your wristSnug, lugs near the edge

Wrist flat: 55.1 mmLug-to-lug: 51.8 mm

How the Black Bay 68 wears

Its lugs reach 8.8 mm past the 43 mm case, more than the 7 mm typical across the almanac, so it wears larger than its diameter suggests.

On our fit model it sits best on wrists from 7.25" to 8.5" (18.4–21.6 cm); below 7.25" the lugs start to reach the edge of the wrist.

At 13.6 mm thick it is thicker than 73% of the 124 other dive watches we've measured, so expect it to sit tall on the wrist.

Its 22 mm lug width is one of the most common strap sizes; 42 other watches here share it, so aftermarket straps are easy to find.

Will the Black Bay 68 fit your wrist?

With a 51.8 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	Lugs overhang
7"	55.1 mm	Snug, lugs near the edge
7.5"	59.1 mm	Ideal fit
8"	63 mm	Ideal fit

Specifications

Reference: M7943A1A0NU-0001
Collection: Black Bay
Status: In production
Introduced: 2026
Case material: stainless steel
Crystal: sapphire
Water resistance: 200 m
Bezel: unidirectional rotating
Dial: blue
Strap / bracelet: steel bracelet
Style: Dive

Movement

Caliber: Tudor MT5601-U
Type: automatic
Power reserve: 70 hours
Accuracy: COSC + METAS Master Chronometer

Takes 22 mm straps. See other 22 mm watches and straps.

More Black Bay references

Watches that wear the same size

Other watches within 1.5 mm of its lug-to-lug.

Same 22 mm lug width

All 22 mm watches

These take the same straps as the Black Bay 68.