Oris
Williams 01 674 7725 8734-07 424 54FCTB— lug 20mm

The lug width is 20mm. This measurement corresponds to the space between the case lugs where the strap is inserted. Any compatible strap for the Williams must be exactly 20mm wide to ensure proper fit without play or slippage.

There is no universal choice; it depends on intended use: NATO straps in nylon offer versatility and water resistance; vegetable-tanned leather straps maintain sport-elegant character; FKM rubber straps are the technical solution for humid environments. For a Williams, we recommend selecting the strap based on your primary use: daily wear, sports, or formal occasions.

Changing the strap requires a spring bar tool to compress the spring-loaded pin that secures the strap to the lugs. Position the tool under the lug, compress the pin, slide out the old strap, and insert the new one. Reverse the process for the opposite side. Avoid forcing to prevent damage to the carbon-titanium lugs.

Yes, any strap with a 20mm lug width is compatible. Artisanal leather straps, NATO straps in fabric, and quality rubber straps are reliable solutions that maintain the Williams's construction standards without compromise.

Durability depends on leather quality and usage patterns. A quality artisanal vegetable-tanned leather strap, with regular maintenance (cleaning and conditioning), can last 3-5 years in daily wear. Exposure to moisture, perspiration, and temperature fluctuations accelerates wear; vegetable-tanned leather develops a natural patina over time, adding character to the watch.