Longines · Conquest V.H.P.

Strap for Conquest V.H.P. Chronograph 42 Stainless Steel / Carbon / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter42 mm
ReferenceL3.717.4.66.6 (aka: L37174666)
FamilyConquest V.H.P.
MovementLongines caliber L289.2 Hours, Minutes, Small Seconds | Date | Chronograph
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Conquest V.H.P. L3.717.4.66.6 (aka: L37174666)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Conquest V.H.P. L3.717.4.66.6 (aka: L37174666), seen from the bench

The Longines Conquest V.H.P. L3.717.4.66.6 represents contemporary Swiss precision in sports watches, featuring the revolutionary Longines caliber L289.2 quartz movement with ±10 seconds per year accuracy. The 42 mm stainless steel tonneau case with transparent caseback houses a black dial with bi-color applied indices and integrated chronograph. Strap width is 20 mm, standard for this model's wide-lug architecture. Water resistance reaches 100 meters for recreational water sports.

Frequently asked questions

What is the lug width of the Longines Conquest V.H.P. L3.717.4.66.6?

The lug width is 20 mm, measured between the lateral attachment pins beneath the caseback. This dimension is specific to the Conquest V.H.P. and is the standard for the 42 mm tonneau case of this model.

What is the best strap for the Longines Conquest V.H.P.?

For a Conquest V.H.P., an alligator strap in cognac or dark chocolate tones with delicate grain is ideal for sport-elegant combinations. A burgundy-red shell cordovan represents the collector's choice owing to its natural lustre. For more casual contexts, a grey-blue NATO or black vegetable-tanned calf works excellently.

How do I change the strap on my Longines Conquest V.H.P.?

The strap is replaced using a two-pronged tool (spring bar tool) to extract the attachment pins. Position the watch with the lug side facing upwards, insert the pointed end beneath each pin, lift gently and slide out the old strap. Insert the new strap in the same sequence, ensuring the pins seat firmly in the holes.

Can I use an aftermarket strap for my Longines Conquest V.H.P.?

Yes, any strap with a 20 mm lug width is compatible. Ensure the width measured between the pins is exactly 20 mm. Quality aftermarket straps—in alligator, calf, NATO or rubber—offer aesthetic versatility whilst maintaining mounting precision.

How long does a leather strap last on the Longines Conquest V.H.P.?

A quality leather strap (alligator, shell cordovan or calf) typically lasts 3–5 years with regular use and proper maintenance (monthly cleaning, post-sweat drying, biannual conditioning). A NATO or rubber strap has similar longevity but resists water and mechanical stress better. Durability depends on exposure to humidity, direct sunlight and sporting activities.

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