Strap for Speedmaster Mark II Co-Axial Chronograph Stainless Steel / Black / Bracelet / Rio 2016

The lug width is 20.00 mm. This is the space between the pins that connect the strap to the case. Always verify this dimension before purchasing an aftermarket strap to avoid lateral play or structural incompatibility.

It depends on usage: brown or black alligator is ideal for daily elegance and versatility; black rubber maintains the technical spirit and offers complete water resistance; ballistic nylon NATO recalls aviation heritage; vegetable-tanned calf combines softness and patina that ages well. We recommend rotating between alligator and rubber.

Use a spring bar tool to push the elastic pins downward and slide the strap out of the case. If the strap has a deployant clasp, lift the folding mechanism before proceeding. Reinstall the new strap by aligning the lower lug on the pin and pressing until the click closes.

Yes, any strap with a 20 mm lug width is compatible. On milanostraps.it you will find artisanal straps in alligator, calf, rubber and NATO, customizable in size, initials and thread color. The Casati Milano atelier also offers bespoke creations with direct consultation via WhatsApp.

A high-quality alligator or calf strap with vegetable tanning lasts 3-5 years if worn daily, even 7-10 years if used occasionally. Durability depends on sweat, sun exposure and maintenance: avoid prolonged water immersion and occasionally apply a cleaning balm. Rubber has indefinite durability but requires periodic inspection for micro-cracks.