Longines · Spirit
Strap for Spirit 40.5
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Spirit L2.700.4.23.6 (aka: L27004236)
Selected for the 20 mm lug width · workshop selection
Hammered Calfskin Watch Strap Green with Ecru Stitching€98
Hammered Yellow Strap with Ecru Stitching€98
Black Calfskin Rally Watch Strap – Handmade in Milan€110
Red Suede Strap with Stitching — Milano Straps€90
Grand Cavalier Military Brown Leather Strap€120
The Spirit L2.700.4.23.6 (aka: L27004236), seen from the bench
Frequently asked questions
What is the lug width of the Longines Spirit L2.700.4.23.6?
The Longines Spirit L2.700.4.23.6 features a 20mm lug width. This is the space between the two lugs (the pins) that secure the strap. To verify strap compatibility, measure the distance between these pins: the result must be exactly 20mm. This intermediate width requires specific straps and represents the standard for this product line.
Which strap do you recommend for the Longines Spirit L2.700.4.23.6?
The ideal strap depends on your intended use. For formal elegance, we recommend vegetable-tanned alligator with fine grain, which emphasizes the brushed dial's sobriety. For daily versatility, shell cordovan offers exceptional durability and develops a rich patina over time. If you seek authentic sportiness, a NATO strap in aviator blue or black reinforces the pilot's watch heritage. For aquatic environments, vulcanised rubber allows quick transitions without aesthetic compromise.
How do I change the strap on the Longines Spirit L2.700.4.23.6?
Straps on the Longines Spirit are changed by removing the pins that run through the lugs. You will need a strap removal tool (a bar with appropriately-sized tips). Place the watch on a stable surface, gently push the pin from the inside outward, remove it completely, extract the old strap, insert the new one by guiding the pin through the opposite hole. If unsure, consult a professional watchmaker or contact the Casati Milano atelier for assistance.
Can I use compatible aftermarket straps on this watch?
Yes, you can use high-quality aftermarket straps provided they have the correct 20mm lug width. Premium artisanal straps in alligator, calf leather, shell cordovan, or rubber are fully compatible with the Longines Spirit L2.700.4.23.6. Always verify precise dimensions (lug width, total length, leather thickness) before purchase. milanostraps.it offers a curated selection of 20mm straps tested for compatibility with this reference.
How long does a leather strap last on the Longines Spirit L2.700.4.23.6?
Leather strap longevity depends on material and usage patterns. With vegetable tanning and daily wear, expect 2-4 years before visible wear appears. Shell cordovan lasts considerably longer (5-8 years) due to the material's exceptional fibre structure. Vulcanised rubber may last 3-5 years. Proper storage—avoiding extreme humidity and prolonged direct sunlight—extends useful life. Casati Milano guarantees 18 months on bespoke straps, covering construction defects and premature anomalous 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
