Omega Speedmaster Straps

The Omega Speedmaster Professional has been NASA's official watch since 1965 — worn on every crewed mission and still in production in essentially the same form today. This collection of aftermarket replacement omega speedmaster straps covers the full range: calfskin leather, sheepskin, alligator-embossed, FKM rubber, sailcloth, fabric and NATO. Compatible with Speedmaster references at both 20mm and 21mm lug widths, including the Professional Moonwatch 42mm and larger case variants such as the Dark Side of the Moon.

Shop by material: Read our guide: Best Straps for the Omega Speedmaster Professional Omega Speedmaster Leather Straps | Omega Speedmaster Rubber Straps | Omega Speedmaster NATO Straps

Part of the full Omega Watch Straps collection

Which Speedmaster Strap Do You Need?

The right replacement strap starts with the lug width. The Speedmaster Professional Moonwatch 42mm takes a 20mm strap, as do the Speedmaster Racing and most standard references. Larger case variants including the Dark Side of the Moon and other 44mm-plus references take a 21mm strap. If you are unsure, measure the distance between the inside faces of the lugs or check your reference number.

What size strap fits an Omega Speedmaster Professional?
The Speedmaster Professional Moonwatch 42mm takes a 20mm strap across all current references including the Calibre 3861.

What size strap fits the Speedmaster Dark Side of the Moon and larger references?
Larger Speedmaster case variants typically take a 21mm strap. Check your specific reference number if unsure.

What is the best strap for the Omega Speedmaster Moonwatch?
Black leather for a clean dress profile, black or navy FKM rubber for modern daily wear, and grey or black NATO for an authentic tool-watch look. All options in this collection are sized for the Moonwatch's 20mm lugs.

Are aftermarket Omega Speedmaster straps worth buying?
Aftermarket replacement straps match or exceed OEM material quality at significantly lower cost. The difference is branding, not performance.

How do I remove the Speedmaster bracelet before fitting a strap?
Use a dedicated bracelet removal tool — not a standard spring bar tool. It compresses both spring bar shoulders simultaneously for controlled, scratch-free removal without risking damage to the lugs. It also includes a free strap to the value of £85.

For material, FKM rubber is the most practical choice for daily wear — it handles heat, sweat and moisture without degrading and suits the Speedmaster's tool-watch character. Leather brings warmth and dress character to the steel case, particularly in black or brown calfskin. For a lighter, more casual option that references the watch's professional heritage directly, NATO and fabric work across the full range.

Browse Omega straps: Omega Watch Straps | Omega Seamaster Straps | Omega Aqua Terra Straps

OMEGA Speedmaster FAQ's

Are Omega Speedmaster straps interchangeable?

Yes. As long as the strap matches your lug width, typically 20 mm for the Speedmaster Professional and Moonwatch. Check your reference to confirm and always test security after fitting.

What size strap fits the Omega Speedmaster?

Most Speedmaster Professional and Moonwatch models use 20 mm. Many Racing and Reduced variants do as well, but verify your reference before ordering. Our product titles and filters call out 20 mm sizing for clarity.

How do I change the strap on an Omega Speedmaster?

Use a spring-bar tool or a quick-release strap. Work on a soft surface, compress the spring bar to remove the old strap, then seat the new strap carefully until both ends click into place. Consider our Bracelet Removal Tool if you are coming from a metal bracelet.

Which strap material is best for the Speedmaster?

For everyday and formal wear, leather is timeless. For travel and sport, rubber is low maintenance and secure. For a heritage-driven, casual look, choose a NATO or leather strap.

Does Omega make an alligator strap for the Speedmaster?

Omega offers OEM options, but many collectors choose independent alligator-embossed leather for value and variety. Our collection includes premium finishes sized for 20 mm Speedmaster lugs.

What is the best strap for the Omega Speedmaster Moonwatch?

Black leather for a clean, dress-ready profile, black or navy rubber for modern versatility, and grey or black NATO for an authentic tool-watch feel. All options in our collection are sized for the Moonwatch’s 20 mm lugs.