Strap for Submariner Date 16613 Black Tritium

The Rolex Submariner 16613 Black Tritium features a lug width of 20mm. This measurement is the fundamental technical parameter for selecting a compatible strap. To verify it accurately, measure with a digital calliper the distance between the two holes located at the base of the lugs: the value must correspond exactly to 20mm for the strap to sit perfectly without lateral play.

Several options are recommended depending on intended use. Alligator is the most refined choice: its symmetrical scales create a texture that enhances the two-tone case with understated elegance. Italian vegetable-tanned calf leather develops a patina that matures magnificently over time. Shell cordovan guarantees chromatic depth and superior craftsmanship. For sporting applications or warm seasons, a vulcanised rubber strap offers water reliability and reduces mechanical stress on the lugs.

Strap replacement requires specialist tools: a spring bar removal tool and a suitable work surface. Position the watch so the lugs are clearly visible, gently insert the spring bar tool into the lateral hole of the lug to release the horizontal pin, and remove the original strap. When inserting the new strap, ensure the pin is perfectly aligned in the new lug holes. If you lack experience, entrust the task to a qualified watchmaker to avoid damaging the case.

Yes, a high-quality artisanal aftermarket strap measuring 20mm is perfectly compatible. A custom strap in alligator, calf leather or shell cordovan not only fits precisely but also allows you to personalise your watch according to your personal style. The important consideration is that the strap be constructed by experienced craftsmen so it respects the build tolerances of the original Rolex case and guarantees reliability over time.

The lifespan of a leather strap varies depending on material, frequency of use and maintenance. Quality calf leather used daily lasts approximately 3–5 years before replacement is necessary. Alligator, being more resistant, can last 5–7 years. Shell cordovan, thanks to its structural density, can reach even 10 years. Continuous exposure to water, perspiration and sunlight accelerates ageing. Regular maintenance with creams specifically formulated for vegetable-tanned leathers significantly extends its useful life.