Strap for Presence 33 Quartz Stainless Steel Roman

The lug width of the Longines Presence L4.720.4.11.2 is exactly 18 mm. This measurement refers to the internal distance between the two lug holes where the spring bars attach. To verify compatibility with a strap, measure this distance precisely; it should be 18 mm ± 0.2 mm. This is the original specification set by Longines for this model and is essential for ensuring a perfect fit and correct wearability.

We recommend vegetable-tanned calf leather in neutral tones (cognac brown, iron grey, black) as the primary choice, as it maintains the watch's sober aesthetic. Shell cordovan represents the luxury option, developing a natural patina over time and offering longevity exceeding 15 years. For those preferring simplicity, canvas NATO straps maintain an informal register without compromising the watch's identity. We advise against shiny synthetic materials, which would diminish the design's purity.

To change the strap, you must remove the spring bars—the small metal pins that secure the strap to the lugs. Use a spring bar tool or dedicated removal tool, applying gentle inward pressure on the pin to release the strap from its housing. Once the original strap is removed, insert the new spring bar into the first hole, then apply light outward pressure until the pin locks into the opposite position. Repeat on the other lug. If uncertain, consult a professional watchmaker or visit Casati Milano atelier.

Yes, you can use a compatible 18 mm aftermarket strap. However, it is essential that the strap is manufactured to precise construction tolerances: the lugs must be cut to exactly 18 mm, the holes must align perfectly with the spring bars, and finishing must be quality-controlled. Artisan-made straps from specialised makers ensure this quality, avoiding the construction errors common in generic straps. Compatibility concerns not only size but also the quality of the attachment and stitching.

Durability depends on material and usage patterns. A quality vegetable-tanned calf strap typically lasts 3–5 years with daily wear, thanks to the natural patina that develops. Shell cordovan guarantees superior longevity, often exceeding 15 years, as the leather becomes more robust with time. Canvas NATO straps resist 5–7 years, provided the fabric is not exposed to excessive moisture. Regular cleaning and periodic rest (rotating straps) significantly extend product life. An artisan strap built to certified quality standards maintains elasticity and strength far longer than industrial mass-produced straps.