Tudor · Black Bay

Strap for Heritage Black Bay Black Manufacture / Strap

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter41 mm
Reference79230N-0008 (aka: M79230N-0008, 79230N0008)
FamilyBlack Bay
MovementTudor caliber MT5602 hours, minutes, seconds | chronometer
Year2016
CaseStainless Steel

Recommended spring bar

Modern Tudor 22mm spring bars — factory specification

Technical match for lug width and diameter · lug 22 mm · Ø 1.8 mm

All Tudor spring barsOpen →

Straps for the Black Bay 79230N-0008 (aka: M79230N-0008, 79230N0008)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Black Bay 79230N-0008 (aka: M79230N-0008, 79230N0008), seen from the bench

The Tudor Black Bay 79230N-0008 represents six decades of diving watch heritage and military engineering. This 41mm stainless steel case features the distinctive 60-minute Snowflake rotational bezel, black dial with white gold applied indices, and a domed sapphire crystal. Powered by the Tudor MT5602 chronometer-certified movement with free anchor escapement and Breguet balance spring oscillating at 4 Hz, it delivers 200 meters water resistance. The 22mm lug width represents the optimal balance between case structure and wrist aesthetics, requiring exact strap compatibility for proper fit without lateral play.

Frequently asked questions

What is the exact lug width of the Tudor Black Bay 79230N-0008?

The lug width of the Tudor Black Bay 79230N-0008 is exactly 22 millimetres. This width is the precise standard for this particular reference and must be strictly adhered to when selecting a strap: an ansa that is too narrow will not insert properly into the lug holes on the case, whilst one that is too wide will create unacceptable lateral play. To verify this measurement, use a digital calliper and measure from the internal base of one lug hole to the other, perpendicular to the case plane.

Which strap pairs best with the Tudor Black Bay 79230N-0008?

For the Black Bay 79230N-0008, we recommend a strap in black or burnt brown alligator leather, which respects the model's maritime heritage with complete authenticity. Alternatively, vegetable-tanned calf leather in earth tones develops a beautiful natural patina over time. For daily wear in humid environments, a high-quality vulcanised rubber deployant offers durability and practicality without compromising the watch's tactical identity and tool watch character.

How do I change the strap on my Tudor Black Bay 79230N-0008?

The Tudor Black Bay 79230N-0008 utilises the classic fixed lug attachment with spring bars. To change the strap: position the watch horizontally, use a spring bar remover or small flat-head screwdriver, insert gently beneath the tiny metal pin that holds the spring, and lever upwards until the first end is released; repeat for the opposite side. Ensure that the shoulders of the new ansa are perfectly curved and that the width is exactly 22 millimetres before proceeding with installation.

Is aftermarket 22mm strap compatible with the Tudor Black Bay 79230N-0008?

Yes, any aftermarket strap with a 22 millimetre lug width is compatible with the Tudor Black Bay 79230N-0008, provided it strictly adheres to this exact measurement. Bespoke artisanal straps from MilanoStraps are constructed to this specification and nest perfectly into the case lugs without play or friction. Always verify that your supplier explicitly states 22mm and uses materials of quality consistent with the watch's purpose: vegetable-tanned leather, genuine alligator, or vulcanised rubber.

How long will a natural leather strap last on the Tudor Black Bay 79230N-0008?

The lifespan of a natural leather strap depends on three critical factors: tanning quality, frequency of use, and climate exposure. A strap in vegetable-tanned calf of excellent quality can last 4–6 years of constant wear, developing a captivating patina. Genuine alligator is substantially more durable, easily surpassing 7–10 years. Excessive humidity exposure, continuous fresh water contact, and direct UV radiation will shorten this window considerably. A high-quality vulcanised rubber strap will exceed 10 years but requires periodic cleaning to maintain appearance. MilanoStraps provides an 18-month warranty on all straps handcrafted in our atelier.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only