Strap for Presence 34.5 Automatic Stainless Steel Black Diamond

The lug width of the Longines Presence L4.721.4.97.6 is 18 mm. This is the distance between the two horizontal lugs that secure the strap to the case. This measurement is critical for compatibility: any strap must have an exact lug width of 18 mm to fit perfectly without play or binding.

For the Presence L4.721.4.97.6 we primarily recommend alligator mississippienne in black or deep burgundy: the restrained grain works beautifully with the 34.50 mm case without visual heaviness. Quality alternatives include vegetable-tanned calf leather for natural ageing, shell cordovan for durability and final lustre, or a textile NATO for daily wear and versatility.

Strap replacement requires a spring bar tool or equivalent implement to extract the lateral pins holding the strap in place. Position the watch on a stable surface, gently lift the spring of one pin at a time, and the strap will come free. For the new strap, insert the pins through the designated apertures and lower the spring until fully secured. If you lack experience, entrust the task to a specialist service.

Yes, provided it has an 18 mm lug width. Quality aftermarket straps maintain full compatibility with the Longines case without damage. Many collectors choose artisanal straps for aesthetic personalisation and superior quality compared to factory options, which often prioritise production cost over long-term durability.

Longevity depends on leather quality and use patterns. An artisanal alligator or shell cordovan strap of quality resists 5-7 years of daily use before replacement becomes necessary. Vegetable-tanned leather ages exceptionally, developing patina that visually extends the strap's lifespan. Rubber and NATO offer greater longevity (8-10 years) but less aesthetic evolution over time.