Strap for Presence 34.5 Automatic Stainless Steel

The lug width of the Longines Presence L4.821.4.75.6 is 18 mm. This measurement refers to the internal distance between the lugs where the strap attaches to the case. This specification is important: not all standard straps are compatible with this width. Always verify the measurement before purchasing a replacement strap to ensure compatibility.

The ideal strap depends on your personal style and intended use. For a formal aesthetic, we recommend alligator or vegetable-tanned calf leather in black, dark brown, or navy blue. For daily sporty use, a NATO strap in cotton or an FKM rubber strap offers practicality and durability. Your choice of material influences how the patina develops over time: calf leather develops a honeyed patina after 12-18 months, whilst alligator assumes golden tones.

Changing the strap requires a specific tool: a spring bar tool. Position the flat end of the tool under the lug pin, apply gentle and even pressure until the pin retracts. Replace the old strap with the new one, aligning the pins to the case lugs. If you are inexperienced, consult an experienced watchmaker or specialised atelier: Casati Milano offers strap replacement services by appointment.

Yes, the Longines Presence L4.821.4.75.6 is fully compatible with aftermarket straps measuring 18 mm in width. You will find ready-to-ship straps online in various finishes (alligator, calf leather, NATO). For a superior bespoke experience, Casati Milano creates custom straps with personal leather selection, personalisation of initials and stitching thread, guaranteed for 18 months.

Durability depends on the material and intensity of use. A vegetable-tanned calf leather strap typically lasts 3-5 years if worn regularly (4-5 days per week) and subjected to occasional maintenance (cleaning with a soft cloth). Alligator, being more resistant, can last 5-7 years. An FKM rubber or technical silicone strap lasts longer (7-10 years), requiring only periodic cleaning. The patina that develops represents natural ageing and enhances the aesthetic character of the strap.