Longines · Conquest

Strap for Conquest 35 Quartz Stainless Steel Diamond Bezel

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
ReferenceL3.280.0.87.7 (aka: L32800877)
FamilyConquest
MovementLongines caliber L263 Hours, Minutes, Seconds | Date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Frequently asked questions

What is the lug width of the Longines Conquest L3.280.0.87.7?

The lug width of the Longines Conquest L3.280.0.87.7 is 17mm. This measurement corresponds to the distance between the spring bars that hold the original strap. It is a rare dimension in the contemporary market and requires straps specifically cut to this width to ensure a perfect fit without undesired movement.

Which strap material is best suited for the Longines Conquest L3.280.0.87.7?

The Longines Conquest L3.280.0.87.7 adapts well to multiple materials depending on your intended use. Alligator leather offers formal elegance and natural geometric texture; vegetable-tanned calf develops warm patina over time; NATO provides sporting versatility; reinforced rubber ensures comfort in humid environments. Your choice depends on personal style and intended use (daily wear, formal, active).

How do I change the strap on my Longines Conquest L3.280.0.87.7?

To change the strap on your Longines Conquest L3.280.0.87.7, you will need a spring bar removal tool. Locate the small metal cylinders (spring bars) on either side of the case. Insert the tool into the groove of the spring bar and gently press towards the watch to release the internal spring. Remove the old strap and insert the new one, snapping the spring bars into position. If inexperienced, consult a professional watchmaker.

Is there an aftermarket strap compatible with the Longines Conquest L3.280.0.87.7?

Yes, but it requires precise specifications. The strap must have an exact lug width of 17mm. In the aftermarket, this width is less common than 18mm or 20mm, so it is essential to verify specifications before purchase. Many specialized artisans, such as those at milanostraps.it, produce custom handcrafted straps in the 17mm width.

How long does a leather strap last on a Longines Conquest L3.280.0.87.7?

The lifespan of a leather strap for the Longines Conquest L3.280.0.87.7 depends on the material and usage. Quality vegetable-tanned calf typically lasts 3-5 years with daily wear, developing fascinating patina over time. Alligator offers greater durability (5-7 years). Reinforced rubber easily exceeds 5-7 years. Factors such as humidity, sun exposure, and frequency of use accelerate ageing. Regular maintenance and rotation with alternative straps extend useful life.

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