Omega · Speedmaster Reduced

Strap for Speedmaster Reduced Stainless Steel / Yellow / Bracelet / Schumacher

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
Reference3510.12.00 (aka: 35101200)
FamilySpeedmaster Reduced
MovementOmega caliber 1143 hours, minutes, small seconds | Chronograph
Year1996 - 2000
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 3510.12.00 (aka: 35101200)

Selected for the 18 mm lug width

All 18 mm straps →

The Speedmaster Reduced 3510.12.00 (aka: 35101200), seen from the bench

The Speedmaster Reduced 3510.12.00 is an automatic chronograph with caliber 1143 movement, housed in a 39mm stainless steel case. It features an 18mm lug width, characteristic of the Reduced series. The watch maintains the iconic Speedmaster design with a black dial, white counters, unidirectional rotating bezel, sapphire crystal, and 50m water resistance, offering a proportioned alternative to the Professional model for daily wear.

Frequently asked questions

What is the lug width of the Omega Speedmaster Reduced 3510.12.00?

The lug width of the Speedmaster Reduced 3510.12.00 is 18mm. This width is specific to the Reduced model and differentiates it from the Professional: it allows optimal proportionality on the 39mm case, avoiding a bulky appearance. Always verify by measuring the gap between the two spring bar holes at the center of the bar.

What is the best strap for the Speedmaster Reduced 3510.12.00?

The Reduced accepts straps in alligator with natural texture (everyday elegance), hammer-grained calf (sporty style), and shell cordovan (patina that evolves over time). For timed use or humid environments, vulcanized rubber maintains the original sporty aesthetic. The choice depends on the occasion: an amber brown alligator for the office, a bordeaux calf for the evening, a black rubber for sport.

How do you change the strap on the Speedmaster Reduced 3510.12.00?

Use a dedicated spring bar tool to remove the lugs, or visit a watchmaker: insert the tool tip under the spring bar support towards the inside of the case, gently push until the spring retracts, then extract the bar from the case holes. Reverse the procedure to mount the new strap. Avoid violent lateral movements that could damage the holes.

Is an aftermarket 18mm strap compatible with the Speedmaster Reduced 3510.12.00?

Yes: any strap with an 18mm lug width is mechanically compatible. However, aesthetic compatibility depends on style: the Reduced expresses its elegance best with structured leather, alligator, or quality rubber straps, avoiding excessively casual or oversized approaches. A vegetable-tanned leather strap allows you to take advantage of the variable strap length.

How long does a leather strap last on a Speedmaster Reduced 3510.12.00?

Durability depends on leather quality and wear level: an artisanal alligator or shell cordovan lasts 4–6 years if worn daily on one wrist, developing a pleasant patina. Hammer-grained calf resists 2–3 years before showing abrasion marks. Vulcanized rubber maintains its properties for up to 5 years, but gradually loses elasticity. Store the Reduced in a cool, dry environment when not worn.

The next step

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