Strap for Step One Day & Date Stainless Steel / PVD / Silver

The lug width of the L & Jr Step One S1301 is 20mm. This is the precise distance between the suspension lugs on the case and represents the geometric constraint for compatible strap selection. Measuring this dimension correctly is essential before ordering an aftermarket strap.

We recommend a vegetable-tanned alligator leather strap for the S1301, which emphasises the contemporary aesthetic of the 45mm case. A versatile alternative is a vegetable-tanned calf strap in cognac brown or black. For sporty contexts, a linen NATO strap or black FKM rubber provides practicality and tactile grip whilst maintaining aesthetic coherence.

The S1301 strap is changed via the suspension lugs. Use a spring bar tool to compress the internal spring of the lug pin and slide it out from the case lugs. Insert the new strap by aligning the holes with the lugs and reinsert the pins until you feel the click of engagement. Apply gentle pressure to avoid damage to the case or new strap.

Yes, any strap equipped with lugs or passants for 20mm width is compatible with the S1301. Always verify that the new strap's lugs are sized at 20mm—this is the only critical variable. Leather, NATO, rubber and fabric straps are compatible provided they feature the correct lug width.

A quality leather strap (alligator, vegetable-tanned calf, shell cordovan) lasts 5-10 years with moderate use, up to 2-3 years with intensive daily use. Durability depends on frequency of use, exposure to water and sun, and maintenance. Vegetable tanning develops a natural patina that increases aesthetic appeal over time. We recommend periodic rotation with other straps to extend longevity.