Apple · Watch Sport

Strap for Watch Sport 38mm

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

Integrated bracelet

The Apple Watch Sport MJ2X2LL 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
ReferenceMJ2X2LL
FamilyWatch Sport
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, Aluminium

Spring bar

Swiss Standard universal spring bars

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

The Watch Sport MJ2X2LL, seen from the bench

The Apple Watch Sport was launched in 2015 as the entry-level version of the first generation of Apple smartwatches. The device features the Apple Watch caliber with multiple digital functions including chronograph, perpetual calendar, moon phases, and alarm. The case comes in 38mm or 42mm aluminum with a Sport band in fluoroelastomer.

Frequently asked questions

Can you fit a standard strap on an Apple Watch Sport?

No, the bracelet is integrated into the case with a proprietary Apple attachment. A conventional strap won't fit. But in the atelier I craft a custom strap directly onto your case, respecting the original geometry without compromise.

How does the custom strap service work for this model?

Everything is made here. Contact <a href="/pages/casati-booking">Casati Milano</a> to book an appointment, and during the consultation I take measurements directly from your case. I work by hand on every connector so the strap integrates seamlessly with the watch body.

Which leather do you recommend for the Apple Watch Sport?

Tuscan Leather. This model has a sporty yet elegant character, and Tuscan leather ages beautifully whilst maintaining a tactile robustness that accompanies the technology without making it feel fragile. If you prefer something softer, Swift works equally well.

How long does a well-made strap last?

With the leathers we use, between 5 and 7 years of daily wear. Longevity depends on how you care for it: avoid prolonged moisture, clean it occasionally with a soft cloth. The leather ages, develops a patina, but doesn't break down.

Why does the 2015 Apple Watch Sport still deserve attention?

It redefined what it means to wear technology on your wrist. The ceramic and aluminium case at 33.30mm is calibrated: light, balanced, understated. It's not a smartphone on your arm. A custom leather strap completely transforms your relationship with this object.

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.

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