Strap for Purist Typ 2 Datum Stainless Steel / Black

The lug width of the P2DS-LS is 20 millimetres. This measurement determines compatibility with any aftermarket strap and is critical for ensuring the spring bar seats correctly without mechanical play or undue pressure on the case. Measure by checking the clear space between the two lateral lugs of the case.

For the P2DS-LS, we recommend an alligator strap in black or dark brown with brushed steel hardware. The natural texture of the leather dialogues harmoniously with the steel case without competing visually. Vegetable-tanned calf represents a contemporary alternative that develops personal patina over time, emphasising the construction philosophy of the watch.

To change the strap on a 20mm lug watch, use a dedicated spring bar tool. Position the tool in the lower groove of the spring bar and apply gentle downward pressure to release the anterior hole, then carefully extract the bar. Repeat for the rear lug. Mount the new strap by inserting the spring bar into the anterior hole and snapping it firmly into final position. Verify both sides are seated symmetrically.

The P2DS-LS is fully compatible with any strap featuring 20mm lugs, regardless of material or brand. We recommend verifying that the strap width at the spring bar seating point aligns with case geometry to avoid asymmetric pressure. High-quality artisanal straps guarantee manufacturing precision and durability.

Leather strap longevity depends on material and usage patterns. A quality alligator strap with vegetable tanning maintains structural integrity for 8–12 years of daily wear. Tinted calf develops visible patina after 6–8 months, reaching optimal aesthetics after 2–3 years. Rubber, an inert material, preserves physical properties for 5–7 years. Regular maintenance and limited exposure to external heat significantly extend strap lifespan.