Longines · Master Collection

Strap for Master Collection Chronograph 40 Stainless Steel / Blue / Strap

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

Lug width20 mm
Case diameter40 mm
ReferenceL2.629.4.92.0 (aka: L26294920)
FamilyMaster Collection
MovementLongines caliber L651 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 Master Collection L2.629.4.92.0 (aka: L26294920)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Master Collection L2.629.4.92.0 (aka: L26294920), seen from the bench

The Master Collection belongs to the classic range of Longines and is equipped with the L651 caliber with functions of hours, minutes, small seconds, date and chronograph. The case features traditional lines with a polished finish and a classic winding crown. The silver dial includes chronograph counters and a date window at 3 o'clock.

Frequently asked questions

What is the lug width of the Longines Master Collection L2.629.4.92.0?

The Longines Master Collection L2.629.4.92.0 features a 20mm lug width. This intermediate size allows for a broad range of compatible strap options. To verify the exact measurement, measure the distance between the lugs on the case using a digital calliper.

Which strap is best suited for the Longines Master Collection L2.629.4.92.0?

The choice depends on your intended use. For formal occasions, an alligator or burgundy shell cordovan strap extracts elegance and refinement. For everyday versatility, we recommend a vegetable-tanned calfskin strap in medium brown. For sports or coastal environments, a natural rubber strap resists the elements more effectively. The 20mm lug width accommodates all these options.

How do I change the strap on my Longines Master Collection L2.629.4.92.0?

To change the strap, you must remove the spring bars (lugs) from the original strap using a specialized spring bar removal tool or a small pin. Once removed, insert the spring bars into the new strap's lug holes and reattach the strap to the case. Ensure the spring bars fit perfectly into the holes without force.

Can I use a third-party strap on my Longines Master Collection L2.629.4.92.0?

Yes, the Longines Master Collection L2.629.4.92.0 is compatible with any high-quality 20mm aftermarket strap. Specialist manufacturers offer options in premium leathers, technical rubber, and fabrics not provided by the manufacturer. Always verify that the 20mm lug width fits perfectly into the case's attachment holes.

How long does a leather strap last on a Longines Master Collection L2.629.4.92.0?

A high-quality leather strap typically lasts 3-5 years with regular wear and proper maintenance. Durability depends on usage frequency, climate, sun exposure, and humidity. A vegetable-tanned leather develops a distinctive patina that can extend the perceived longevity. Standard warranty on artisanal straps is typically 18 months.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only