Strap for Explorer 40 Stainless Steel

The Rolex Explorer ref. 224270-0001 is equipped with a 20mm lug width. This measurement is standard for the model and determined by the proportion between the case diameter (40mm) and the lateral attachment thickness. A 20mm lug width means the internal distance between the two mounting points of the strap to the case is exactly 20 millimetres.

There is no universally "best" strap, as it depends on intended use and personal preference. For classical aesthetics, medium-dark brown alligator remains the most timeless choice. For those prioritising functionality, canvas NATO represents the most versatile and robust option. For connoisseurs seeking material excellence, shell cordovan offers a rare combination of tactile luxury and durability. Vegetable-tanned calf leather is the most elegant alternative for those desiring a patina that improves with time.

Strap replacement on the 224270-0001 is accomplished using spring bars—small metal components that secure the strap to the case lugs. Using a spring bar tool (a dedicated watch tool), light lateral pressure is applied to each bar to release it progressively. The strap is then extracted from the case and may be replaced. The operation requires delicacy to avoid scratching the case or damaging the spring bars.

Any strap with a 20mm lug width is compatible with the Explorer 224270-0001. This includes straps in alligator, calf leather, shell cordovan, linen, cotton, silk, rubber and nylon, provided the attachment width is exactly 20 millimetres. It is essential to verify this measurement before purchase, as a lug width of even 19mm or 21mm would result in improper mounting.

The longevity of a leather strap depends on material quality, frequency of use, and maintenance. A high-quality artisanal alligator or shell cordovan strap can last 3-5 years with moderate daily wear, sometimes longer. Calf leather typically lasts 2-4 years. Factors including sweat exposure, humidity, direct sunlight and heat accelerate ageing. Regular maintenance—periodic cleaning, conditioning with natural waxes, and drying after water contact—significantly extends the strap's lifespan.