Apple · Watch

Strap for Watch 38mm

Integrated bracelet: measurements, the most common questions, and the way to a made-to-measure strap.

Integrated bracelet

The Apple Watch MJ322LL is designed with a bracelet integrated into the case. For a compatible made-to-measure strap, the Casati Milano atelier builds it on your watch.

Case diameter33 mm
ReferenceMJ322LL
FamilyWatch
MovementApple caliber Apple Watch Hours, Minutes, Seconds, World time | Date, Day, Month, Perpetual calendar, Week indicator, Year indicator | Chronograph | Moonphase, Sun position / rising time | Alarm | Smartwatch
Year2015
CaseCeramic, Stainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

The Watch MJ322LL, seen from the bench

The Apple Watch was introduced in 2015 as a smartwatch with the watchOS operating system. The device features the Apple Watch caliber with full timekeeping functions, perpetual calendar, chronograph, and astronomical indications. The MJ322LL reference integrates health monitoring sensors and wireless connectivity.

Frequently asked questions

Can you fit a standard strap on the Apple Watch MJ322LL?

No. The proprietary Apple attachment on this model does not accept standard spring bars. The solution is a bespoke strap built to the exact specifications of your watch by <a href="/pages/casati-booking">Casati Milano</a>.

How does bespoke strap construction work for the MJ322LL?

The craftsman measures the precise geometry of your proprietary attachment on the watch itself, then builds a leather lug tailored to that configuration. The process includes leather selection, custom pattern-cutting, hand-stitching, buckle or keeper mounting, and full finishing. The result is a strap that fits perfectly and ages beautifully.

What leather suits the character of the Apple Watch MJ322LL?

American Horween leather in natural chrome with fine grain complements the ceramic's purity, or Italian Tuscan leather with deep patina creates elegant contrast. Swiss calf with a satiny finish works perfectly for those seeking tactile softness and minimalist construction. Avoid saturated colours and artificial textures.

How long does a well-made artisanal strap last?

A strap crafted from premium leather and quality stitching lasts 5 to 10 years of daily wear, often longer. The patina that develops over time is part of its value, telling the story of your watch. Minimal maintenance—annual conditioning and gentle cleaning—extends its life further.

Why does the ceramic MJ322LL require such a specific strap?

The white ceramic on the MJ322LL (zirconium oxide) is structural material, not cosmetic, and demands total aesthetic coherence. The proprietary attachment is part of the case design, not a modular element. A bespoke strap honours this design logic, creating visual and functional harmony that a generic accessory cannot achieve.

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