Strap for GrandeVitesse Tachymeter Panda

The lug width of the Longines GrandeVitesse L3.636.4.70.6 is precisely 20mm. This measurement is taken between the two horizontal lugs on the case and allows the use of standard straps without any adaptation required. A 42mm diameter case demands this proportion to maintain aesthetic balance.

The ideal strap depends on intended use. For formal-sports wear, an alligator in vegetable tanning in brown or black offers elegance without compromising the instrument's sporting nature. For daily intense use, an aged calf in cognac or a fabric NATO ensures practicality and grip. For water and active pursuits, vulcanised rubber is the uncompromising choice. The 20mm width accommodates all these options.

The procedure is straightforward. Place the watch on a soft surface with the caseback facing upward. Locate the spring bars that pass through the lugs: using a dedicated spring bar tool or small screwdriver, compress the bar laterally until sufficient space emerges to extract the old strap. Insert the new strap, aligning the holes, and release the bar, which will click into place. Never force: movement must be smooth and precise.

Yes, any standard 20mm lug width strap is compatible with the Longines GrandeVitesse L3.636.4.70.6. Milanostraps.it offers a specialised collection of 20mm straps in fine leathers (alligator, calf, shell cordovan), fabrics and rubber, with customisation options in sizing, initials and stitching thread choice. All models guarantee certified compatibility.

Durability depends on use, climate and maintenance. A quality leather strap (alligator or vegetable-tanned calf) lasts 3-5 years under moderate daily wear, up to 7-10 years if alternated with other straps and protected from excessive water and humidity. Shell cordovan tends to last longer due to fibre density. Vulcanised rubber resists 5-7 years even in harsh conditions. Casati Milano warrants every bespoke strap for 18 months.