Longines · Conquest

Strap for Conquest Chronograph 42 Stainless Steel / Silver - Green / Rubber

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter42 mm
ReferenceL3.835.4.02.9
FamilyConquest
MovementLongines caliber L898.5 hours, minutes, small seconds | Chronograph
Year2024
CaseCeramic, Stainless 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 L3.835.4.02.9

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Conquest L3.835.4.02.9, seen from the bench

The Longines Conquest L3.835.4.02.9 is a 42mm stainless steel and ceramic chronograph representing the brand's sporting heritage since 1832. It features the Longines L898.5 automatic movement with a two-counter chronograph function. The 22mm lug width is precisely engineered for medium-sized cases, ensuring proper attachment and articulated mobility, measurable between 21.8 and 22.2mm with a digital caliper.

Frequently asked questions

What is the lug width of the Longines Conquest L3.835.4.02.9?

The lug width is 22mm, a specific dimension designed for mid-case proportions such as the 42mm Conquest. This measurement ensures visual balance between the dial diameter and the wrist, without creating transition imbalances. To verify strap compatibility, use a digital calliper perpendicular to the lugs: the value must fall between 21.8 and 22.2mm.

What is the best strap for the Longines Conquest L3.835.4.02.9?

The choice depends on purpose: for formal or business occasions, an alligator leather strap in black or shell cordovan in burgundy creates an elegant, sophisticated proportion. For daily and sporty use, a vegetable-tanned leather in cognac brown or a NATO strap ensures versatility and durability. The ceramic and stainless steel of the Conquest pairs ideally with materials that maintain natural texture and develop patina over time.

How do you change the strap on the Longines Conquest L3.835.4.02.9?

The strap is replaced by removing the lugs (spring bars) from the lug holes on the case. Use a dedicated spring bar tool to compress the small spring inside the lug and slide it gently out of the hole. Insert the new strap's lug in the same manner, ensuring it is positioned symmetrically. Avoid forcing: a controlled movement prevents damage to the case's finish.

Is an aftermarket strap compatible with the Longines Conquest L3.835.4.02.9?

Yes, provided it has a 22mm lug width. High-quality artisanal straps made from premium leathers such as alligator, shell cordovan, or Tuscan vegetable-tanned leather are fully compatible. Ensure the supplier specifies 22mm dimension and that the total length conforms to your wrist measurements (typically between 125 and 200mm for adults).

How long does a natural leather strap last on the Longines Conquest L3.835.4.02.9?

A quality strap made from vegetable-tanned or shell cordovan leather typically lasts between 3 and 7 years of daily wear. Durability depends on exposure to moisture, perspiration, and cleaning frequency. Vegetable-tanned leather develops a patina that tells the story of time; shell cordovan maintains a firmer structure and resists atmospheric agents better. With periodic maintenance (cleaning and conditioning every 6–12 months), longevity extends significantly.

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