Strap for Presence 34.5 Automatic Yellow Stick Yellow Bracelet Two Tone

The lug width of the Longines Presence L4.721.2.42.7 is 18 millimetres. This measurement denotes the distance between the two contact points of the spring bar mechanism on the case and uniquely determines the compatibility of any replacement strap. To verify, simply remove the original strap gently from the case and measure with a digital calliper the distance between the two metal pins: it must be precisely 18 mm.

Alligator remains the most aesthetically coherent choice with the Presence's design philosophy, particularly in dark cognac, natural brown or black tones. A noble alternative is shell cordovan, a rare leather that develops unique patina over time. For daily versatility, vegetable-tanned Tuscan calf allows a natural patina that ages consciously. A vulcanised natural rubber strap with satin-finished deployante maintains aesthetic coherence in more sporty or informal contexts.

Strap replacement requires access to the lugs (the holes in the case where the strap is inserted). Using a dedicated spring bar tool—a small lever with a flat end—gently press the internal metal pin of the spring bar mechanism, thereby freeing the strap from the lug. Once the original strap is removed, insert the new strap by aligning the pins with the lugs and allowing the spring mechanism to click back into place. The operation requires delicacy to avoid scratching the case.

Absolutely yes. Any strap with an 18 mm lug width is mechanically compatible with the Presence. Build quality depends on the supplier: straps in certified alligator, vegetable-tanned calf, shell cordovan or vulcanised rubber from artisanal sources guarantee durability and aesthetic coherence comparable to the original, often exceeding its versatility of use.

The longevity of a leather strap depends on the quality of the raw material, the tanning method, usage and maintenance. A superior-quality alligator or calf, subject to moderate daily use (not exposed to excessive humidity, intense perspiration or repeated mechanical stress), maintains structural and aesthetic integrity for 4–7 years. Shell cordovan, due to its density and resistance, can last even 10–12 years. Vegetable-tanned leather develops patina and character with ageing, but remains functionally intact for 5–8 years with appropriate care.