Strap for Purist Typ 2 Datum Stainless Steel / Blue

The lug width of the P2DB-LB is 20 millimetres. This measurement is calculated by positioning a calliper on the seat where the strap inserts, from the inner shoulder of one lug to the other, excluding the spring bars. For this model, the distance is precise: 20mm, a standard that reflects the design balance between the 40mm case diameter and wrist proportions.

The P2DB-LB pairs magnificently with alligator straps, which accentuate the aesthetic sobriety and geometric purity of the case. Vegetable-tanned calf leather represents an elegant alternative that ages naturally, developing patina over time. NATO and rubber are contemporary solutions for those seeking versatility and comfort whilst maintaining the formal character of the German timepiece.

Strap replacement requires the use of a spring bar tool or equivalent instrument. Position the watch on a soft surface, locate the lug pin, compress it gently by pushing the spring towards the inside of the case, and slide the old strap outward. Insert the new strap by aligning the holes with the pin and allow the spring to return to position. For high-quality straps, it is advisable to seek professional assistance to avoid scratching the case.

Aftermarket 20mm straps, such as those offered by MilanoStraps, provide a wider choice of colours and materials compared to original options, without compromising construction quality. Artisan Milanese manufacturers guarantee superior finishing, use of premium leathers (alligator, shell cordovan, calf) and bespoke customisation. A quality aftermarket strap can elevate the overall aesthetic of the P2DB-LB whilst respecting its design identity.

The lifespan of a leather strap depends on usage, climate and tanning quality. A vegetable-tanned calf strap, worn regularly, maintains structural integrity for 3–5 years; alligator, with its more robust structure, can last 5–7 years or longer. Exposure to humidity and temperature fluctuations accelerates ageing. A NATO strap (canvas) has superior longevity in challenging environments. To maximise longevity, avoid bathing and prolonged water contact, especially with leather straps.