Longines · Master Collection

Strap for Master Collection Chronograph

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

Lug width20 mm
Case diameter44 mm
ReferenceL2.693.4.51.7 (aka: L26934517)
FamilyMaster Collection
MovementLongines caliber L683.2 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 Master Collection L2.693.4.51.7 (aka: L26934517)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Master Collection L2.693.4.51.7 (aka: L26934517), seen from the bench

The Longines Master Collection features the L683.2 caliber with chronograph, small seconds and date functions. The watch displays hours, minutes and small seconds with a date indication. The reference L2.693.4.51.7 is part of the Master collection dedicated to elegant watches with chronograph complications.

Frequently asked questions

What is the lug width of the Longines Master Collection L2.693.4.51.7?

The lug width of this model is 20mm. This measurement represents the distance between the upper and lower attachment pins of the case. It is essential to verify this dimension when purchasing an aftermarket strap to ensure a perfect fit and avoid unwanted lateral protrusion.

Which strap is best suited for the Longines Master Collection L2.693.4.51.7?

For this 44mm chronograph, the ideal strap depends on intended use and aesthetic preference. Genuine alligator leather offers visual harmony and even texture that enhances the satin dial. For durable leather with natural patina, vegetable-tanned calf is excellent. NATO straps and FKM rubber work well in sports or humid environments.

How do I change the strap on the Longines Master Collection L2.693.4.51.7?

Change the strap using a thin pallet tool to gently lift the attachment pins from the case. Position the watch on a stable surface, insert the tool into the small side hole of the lug, and lift the pin upward until it fully disengages. Repeat for both sides, then insert the pins into the passants of the new strap.

Is a 20mm aftermarket strap compatible with the Longines Master Collection L2.693.4.51.7?

Yes, provided the strap is specifically designed for 20mm lug width. Verify that the passants have thickness and width consistent with standard pins. High-quality aftermarket straps, such as artisanal ones, often offer custom adjustments to guarantee optimal fit and long-term durability.

How long does a natural leather strap last on a Longines Master Collection?

A high-quality natural leather strap with vegetable tanning or genuine alligator can last 3 to 5 years under daily use with proper maintenance. Durability depends on UV exposure, humidity, and frequency of replacement. By rotating between several straps and cleaning regularly, lifespan extends significantly. An 18-month warranty strap provides adequate protection against manufacturing defects.

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