Rolex
Explorer II 16570-0004— lug 20mm

The Rolex Explorer II 16570-0004 features a 20mm lug width, a precise specification that distinguishes it from more recent Explorer II models (Ref. 226570) which employ 22mm lugs. This 20mm width requires careful selection of compatible straps and accurate measurement with callipers to ensure perfect fit without tolerance for error.

The optimal strap depends on intended use. For predominantly formal wear, we recommend natural alligator or vegetable-tanned calf; for field operations, shell cordovan offers superior moisture resistance; for maximum tactical versatility, technical rubber or NATO webbing. Atelier Casati Milano personalises the choice based on your lifestyle during a bespoke consultation by appointment.

Strap replacement requires a specialised lug pin removal tool. Position the watch on a soft cloth cushion, locate the small access hole for the pin on each side, insert the tool gently and push to extract the pin. Repeat for the second pin, then slide out the old strap and insert the new one, aligning the pins carefully. This operation demands precision to avoid scratching the case.

Any artisanal strap with a precisely 20mm lug width is compatible. Atelier Casati Milano manufactures bespoke straps in alligator, calf, shell cordovan and other materials for this specific width. Always verify that the seller specifies exactly 20mm, as half-millimetre errors render the strap unusable.

A quality artisanal leather strap, subject to regular maintenance (water-repellent treatment every 6–12 months depending on use), has a lifespan of 5–8 years. Shell cordovan lasts considerably longer due to the leather's intrinsic durability; calf requires greater care in humid environments. Casati Milano's warranty covers 18 months against manufacturing defects, independent of ordinary wear.