Omega · Speedmaster Reduced

Strap for Speedmaster Reduced Ladies Stainless Steel / Diamond / MOP / Blue

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

Lug width18 mm
Case diameter39 mm
Reference3815.71.53
FamilySpeedmaster Reduced
MovementOmega caliber 3220 hours, minutes, small seconds | Chronograph
CaseStainless 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 Reduced 3815.71.53

Selected for the 18 mm lug width

All 18 mm straps →

The Speedmaster Reduced 3815.71.53, seen from the bench

The Speedmaster Reduced was launched in the 80s as a compact version of the classic Speedmaster. It features the Omega 3220 automatic caliber with hours, minutes, small seconds and chronograph functions. The watch has 18mm lugs and reduced dimensions compared to the standard model.

Frequently asked questions

What is the exact lug width of the Omega Speedmaster Reduced 3815.71.53?

The lug width of the Speedmaster Reduced 3815.71.53 is 18mm. This width is a design specification of the model and ensures balanced visual proportions relative to the 39mm case diameter. No other size is compatible.

Which strap material is best suited for an Omega Speedmaster Reduced 3815.71.53?

It depends on the intended use: vegetable-tanned alligator offers formal elegance, vegetable-tanned calf develops natural patina over time, shell cordovan is the choice for extreme longevity, NATO or FKM rubber solve sportive requirements and moisture resistance. The steel and black dial of the Speedmaster Reduced pair well with dark brown, black, and burgundy tones.

How do you change the strap on an Omega Speedmaster Reduced 3815.71.53?

The strap is secured to the case via pins, also called spring bars. Using a dedicated tool (spring bar tool), apply light pressure to one of the pins to extract it, remove the old strap, position the new strap over the pins, and reinsert the pins into the case lugs. Caution: do not force the pins to avoid damaging the lugs.

Is an aftermarket leather strap compatible with the Omega Speedmaster Reduced 3815.71.53?

Yes, provided the strap has an 18mm lug width. On milanostraps.it you will find artisanal customizable straps for this size, ready to ship. The Casati Milano atelier creates bespoke straps by appointment with direct leather selection.

How long does a leather strap last on an Omega Speedmaster Reduced 3815.71.53?

Durability depends on the material and use. A vegetable-tanned calf typically lasts 3-5 years with daily wear, shell cordovan can reach 10+ years, alligator resists 5-7 years. Exposure to sweat, moisture, and UV rays shortens service life. Milanostraps.it straps include an 18-month warranty.

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