Longines · PrimaLuna
Strap for PrimaLuna Automatic 30 Pink Gold Diamond Funky MOP
Takes 8 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The PrimaLuna L8.113.9.83.6 (aka: L81139836), seen from the bench
Frequently asked questions
What is the lug width of the Longines PrimaLuna L8.113.9.83.6?
The lug width of the Longines PrimaLuna L8.113.9.83.6 is 8mm. This dimension measures the distance between the two lateral pins of the case and is essential for selecting a compatible strap. When measured correctly with a digital calliper, it must be exactly 8mm to ensure a precise fit without play or excessive tension.
Which strap is most recommended for the Longines PrimaLuna L8.113.9.83.6?
For the PrimaLuna L8.113.9.83.6 in pink gold, we recommend straps in alligator (mahogany brown, cognac, or polished black) or vegetable-tanned calf leather. Alligator maintains uniform graining without competing aesthetically with the pink gold, whilst calf leather offers an organic patina that evolves over time. For casual contexts, structured FKM rubber ensures practicality without visual compromise.
How do you change the strap on the Longines PrimaLuna L8.113.9.83.6?
To change the strap, you must remove the spring bars from the lateral lugs of the case. Position the timepiece with the case facing upwards and use a dedicated tool (spring bar tool) to gently compress the small metal pin on each bar. Once released, the bar slides out of the lug. Insert the new strap by repeating the process in reverse order, ensuring that the bars are properly seated in the lugs on both sides.
Are aftermarket straps compatible with the Longines PrimaLuna L8.113.9.83.6?
Yes, all straps with an 8mm lug width are compatible with the PrimaLuna L8.113.9.83.6. However, it is essential to choose specialist brands that guarantee precise millimetre tolerances and jewellery-grade materials (certified alligator, aniline calf, FKM rubber). Generic lower-quality straps may exhibit excessive play or premature wear of the spring bars.
How long does a natural leather strap last on the Longines PrimaLuna L8.113.9.83.6?
A jewellery-grade alligator or calf strap typically lasts 4–6 years of daily wear, provided it receives regular maintenance. Oiling every six months, water-repellent protection after the first week, and immediate drying after prolonged moisture exposure significantly extend the strap's lifespan. Alternating use with a second strap (black + colour) doubles its longevity by distributing wear.
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
