Oris · Williams

Strap for Oris Williams 01 635 7560 4145

Integrated bracelet: measurements, the most common questions, and the way to a made-to-measure strap.

Integrated bracelet

The Oris Williams 01 635 7560 4145 is designed with a bracelet integrated into the case. For a compatible made-to-measure strap, the Casati Milano atelier builds it on your watch.

Case diameter40 mm
Reference01 635 7560 4145
FamilyWilliams
MovementOris caliber Oris 635 Hours, Minutes, Seconds | Date, Day
CrystalSapphire
Water resistance50.00 m

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

The Williams 01 635 7560 4145, seen from the bench

The Oris Williams is powered by the Oris 635 automatic caliber with functions for hours, minutes, seconds, date, and day of the week. The stainless steel case measures 40mm in diameter, and the 35mm lugs complete the steel construction of the timepiece.

Frequently asked questions

What is the exact lug width of the Oris Williams 01 635 7560 4145?

The Oris Williams 01 635 7560 4145 features a 35mm lug width, a specific dimension that requires dedicated straps. The width is measured from the internal base of one lug shoulder to the other, at the insertion point into the case's spring bar mechanism. This measurement is not interchangeable with the more common 42-44mm standards, so compatibility verification is essential before purchasing an aftermarket strap.

Which strap is most suitable for the Oris Williams 01 635 7560 4145?

The choice depends on intended use. For formal elegance, we recommend alligator or calf leather with vegetable tanning: it develops patina over time and enhances the model's sporting identity. For daily wear and humid environments, a NATO strap in cotton-nylon offers practicality and durability. For aquatic activities, vulcanised rubber with grooved texture provides optimal grip and sweat resistance. The Williams accepts all these solutions without aesthetic or functional compromises.

How do you change the strap on the Oris Williams 01 635 7560 4145?

The Oris Williams 01 635 7560 4145 uses a standard spring bar mechanism. Place the watch on a soft pad, locate the small release button or lateral spring that disengages the strap from the case. Gently push the spring inward while pulling the lug shoulder out of the slot. For installing the new strap, align the lug shoulders with the case holes and snap into place until you feel the locking click. Ensure the 35mm width is correct to avoid unwanted play.

Can I use an aftermarket strap compatible with the 01 635 7560 4145?

Yes, provided the lug width is exactly 35mm and construction quality meets artisanal standards. Higher-quality aftermarket straps (vegetable-tanned leather, reinforced stitching, solid deployante clasps) often deliver superior aesthetic performance compared to OEM straps. Milano Straps offers a curated selection of 35mm straps specifically tested for compatibility and durability with the Williams model.

What is the average lifespan of a leather strap for the Oris Williams 01 635 7560 4145?

A quality artisanal leather strap (alligator, calf, shell cordovan) typically lasts 3-5 years with daily wear, developing patina and settling during the first year. Longevity depends on environmental factors (humidity, perspiration, solar exposure) and maintenance (periodic conditioning, rapid drying after water contact). NATO cotton-nylon straps offer longer lifespan (5-7 years) due to weave resistance, whilst vulcanised rubber varies from 4-6 years depending on thickness and vulcanisation quality.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only