Longines · PrimaLuna

Strap for PrimaLuna 30.5 Quartz Moonphase Stainless Steel / Red - Roman / Bracelet

Takes 8 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width8 mm
Case diameter31 mm
ReferenceL8.115.4.92.6
FamilyPrimaLuna
MovementLongines caliber L296.2 hours, minutes, seconds | date | moonphase
Year2022
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

The PrimaLuna L8.115.4.92.6, seen from the bench

The PrimaLuna represents Longines' feminine collection dedicated to astronomical complications. It features the L296.2 caliber with hours, minutes, seconds, date, and moon phases indication. The reference L8.115.4.92.6 has 8mm lugs for slim straps.

Frequently asked questions

What is the lug width of the Longines PrimaLuna L8.115.4.92.6?

The lug width (distance between the lateral case lugs) of the Longines PrimaLuna L8.115.4.92.6 is precisely 8 millimetres. This measurement is critical before purchasing an aftermarket strap, as even 0.5mm deviation can compromise fit and wearing security.

What is the best strap material for the PrimaLuna L8.115.4.92.6?

The Longines PrimaLuna L8.115.4.92.6 accommodates multiple interpretations. Alligator represents maximum formal expression, with patina evolving over time. Vegetable-tanned calf offers authenticity and tactile presence. Shell cordovan communicates sustained luxury through natural lustre. FKM rubber represents the contemporary choice for daily fluidity. Selection depends on primary use context and personal preference regarding patina development.

How do you change the strap on a Longines watch?

Changing a Longines strap requires specific tools: a spring bar tool and controlled precision. Position the watch on a stable surface, locate the metal spring pin (internally sprung), introduce the tool's tip into the lateral hole of the spring, lift with controlled pressure until disengagement from the lug. Repeat on the second side. For reassembly, align the new strap and insert the pins with fluid pressure until they lock into position.

Is there an aftermarket strap compatible with the L8.115.4.92.6?

Yes. Any strap with 8mm lug width is compatible with the Longines PrimaLuna L8.115.4.92.6. Milano Straps offers a complete collection of 8mm artisanal straps, customisable in material (alligator, calf, cordovan, NATO, rubber), colour, length, initials and thread colour. The Casati Milano atelier creates bespoke straps with direct leather selection and 18-month warranty.

How long does a natural leather strap last on a watch like the PrimaLuna?

Natural leather strap longevity depends on usage intensity, climate, moisture exposure and maintenance. An alligator or vegetable-tanned calf strap, subjected to daily urban use in temperate conditions, maintains structural integrity for 4-6 years before replacement. Shell cordovan, due to natural density and resilience, can last 8-10 years. Patina (darkening and lustre) accelerates naturally, representing positive aesthetic evolution. Regular maintenance (gentle cleaning, occasional natural wax treatment) extends longevity.

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