Longines · Conquest

Strap for Conquest 35 Quartz Ceramic Diamond

Takes 17 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width17 mm
Case diameter35 mm
ReferenceL3.281.0.87.7 (aka: L32810877)
FamilyConquest
MovementLongines caliber L263 hours, minutes, seconds | date
CaseMother of Pearl | Ceramic, Stainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

The Conquest L3.281.0.87.7 (aka: L32810877), seen from the bench

The Longines Conquest L3.281.0.87.7 is a 35 mm stainless steel sports watch with mother-of-pearl dial, ceramic bezel, and automatic Longines L263 movement featuring hours, minutes, seconds, and date. The 17 mm lug width ensures compatibility with properly proportioned aftermarket straps. Sapphire crystal with anti-reflective coating and scratch-resistant ceramic bezel deliver durability and readability over time, embodying the brand's instrument-watch heritage since 1954.

Frequently asked questions

What is the lug width of the Longines Conquest L3.281.0.87.7?

The lug width of the Longines Conquest L3.281.0.87.7 is exactly 17 mm. This measurement indicates the distance between the two strap attachment points on the case. A compatible strap must respect this dimension to ensure correct fit and maximum stability on the wrist.

Which strap is recommended for the Longines Conquest L3.281.0.87.7?

For the Conquest L3.281.0.87.7 with mother-of-pearl dial and ceramic bezel, we recommend a quality alligator leather with regular grain and polished finish, which creates sharp aesthetic contrast. Alternatively, vegetable-tanned calf leather in natural tones enhances the movement's warmth. For those seeking versatility, a heavy cotton NATO strap in dark blue maintains Swiss elegance whilst offering functionality.

How do you change the strap on a Longines Conquest?

Strap changing requires a spring bar tool, a small flat instrument. Insert the tip gently under the spring bar (the elastic pin) at the rear of the lug and lift slightly, then slide the strap outward. Repeat on the other side. For installation, align the holes of the new strap and snap the spring bar into position with even pressure. If you prefer to avoid any risk, seeking professional assistance is advisable.

Are aftermarket straps compatible with the Longines Conquest L3.281.0.87.7?

Yes, aftermarket straps are compatible with the Conquest L3.281.0.87.7 provided they have a 17 mm lug width. Artisanal quality straps, made from premium leathers or technical materials, often offer superior fit and aesthetics compared to original straps. Always verify the lug width before purchase.

How long does a leather strap last on a watch like the Longines Conquest L3.281.0.87.7?

The lifespan of a leather strap depends on tanning quality and usage patterns. A high-quality alligator or shell cordovan strap can last 5-7 years with regular maintenance and non-aggressive wear. A softer vegetable-tanned calf strap has an average lifespan of 3-5 years. The patina that develops over time increases aesthetic value. Factors such as humidity, sun exposure, and frequency of wear influence longevity.

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