Omega · Speedmaster (Non-Moonwatch)

Strap for Speedmaster Date 38 Stainless Steel / Red Gold / Diamond / Grey

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter38 mm
Reference324.28.38.40.06.001 (aka: 32428384006001)
FamilySpeedmaster (Non-Moonwatch)
MovementOmega caliber 3304 hours, minutes, small seconds | date | Chronograph
Year2010
CaseRed Gold, Stainless Steel

Recommended spring bar

Spring bars Omega 18mm — single diameter

Technical match for lug width and diameter · lug 18 mm · Ø 1.8 mm

All Omega spring barsOpen →

Straps for the Speedmaster (Non-Moonwatch) 324.28.38.40.06.001 (aka: 32428384006001)

Selected for the 18 mm lug width

All 18 mm straps →

The Speedmaster (Non-Moonwatch) 324.28.38.40.06.001 (aka: 32428384006001), seen from the bench

The Speedmaster in reference 324.28.38.40.06.001 features the Omega 3304 caliber with hour, minute, small seconds, date and chronograph functions. The case has a diameter of 38mm with 18mm lugs. The movement offers complete chronograph indications integrated into the traditional time display.

Frequently asked questions

What is the lug width of the Omega Speedmaster 324.28.38.40.06.001?

The lug width is exactly 18 millimetres. You can verify this by measuring the distance between the two horizontal lugs of the case with a precision calliper. This specification is essential for purchasing compatible straps without any risk.

Which strap should I choose for a bicolour Omega Speedmaster in red gold and steel?

A French or American alligator strap with natural patina is the most elegant choice, as it enhances sophistication without competing chromatically with the bicolour case. Alternatively, vegetable-tanned calf leather offers evolving patina over time. For humid environments, a nylon NATO strap guarantees performance and versatility.

How do I change the strap on a 38mm Omega chronograph?

Use a spring bar tool to gently extract the springs that anchor the strap to the case lugs. Position the new strap by aligning the holes with the springs and push until you hear a click. Avoid sharp blows that could damage the lugs. If you lack experience, entrust the task to a professional.

Are aftermarket straps compatible with this model?

Yes, provided they are specific to the 18mm lug width. Always verify with the seller the exact compatibility and construction quality (leather, stitching, finishing). Custom artisan straps from Casati Milano guarantee perfect fit and superior durability compared to mass-produced products.

How long does a natural leather strap last on a chronograph like this?

A quality alligator or calf strap, treated with vegetable tanning, typically lasts 4-7 years if worn daily. Exposure to water, sweat and UV rays accelerates ageing. Regular maintenance (cleaning, conditioning) and rotation with other straps significantly extends the lifespan of the piece.

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