Oris · Williams

Strap for WilliamsF1 Team Chronograph

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter44 mm
Reference01 773 7685 4184-Set RS
FamilyWilliams
MovementOris caliber Oris 773 Additional 12 hours Hand (adjustable), hours, minutes | date | Chronograph
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Williams 01 773 7685 4184-Set RS

Selected for the 20 mm lug width

All 20 mm straps →

The Williams 01 773 7685 4184-Set RS, seen from the bench

The Oris Williams reference 01 773 7685 4184-Set RS is powered by the Oris 773 caliber with chronograph, date and adjustable 24-hour hand functions. The movement offers hour, minute and an additional 12-hour adjustable hand for the time zone. The watch features integrated chronograph complications within the Oris manufacture caliber.

Frequently asked questions

What is the lug width of the Oris Williams 01 773 7685 4184-Set RS?

The Oris Williams 01 773 7685 4184-Set RS is equipped with a 20mm lug width. This measurement is taken between the integrated lugs (spring bar housings) located at the 12 o'clock and 6 o'clock positions on the case. A digital calliper allows you to verify this dimension precisely before purchasing an aftermarket strap.

What is the best strap for the Oris Williams 01 773 7685 4184-Set RS?

The ideal strap depends on your intended use. For formal contexts, we recommend an alligator strap with vegetable tanning in burgundy or cognac brown, which creates sophisticated contrast with the brushed steel case. For continuous sports use, a NATO strap in Cordura canvas guarantees moisture resistance and ease of cleaning. A fluoroelastomer rubber strap is the maximalist choice for environments where wrist breathability is a priority.

How do I change the strap on the Oris Williams 01 773 7685 4184-Set RS?

The Oris Williams features integrated lugs on the case. To replace the strap, you will need a spring bar removal tool to compress the spring bars located inside the lugs. Once compressed, the old strap slides out easily. The new strap is inserted by aligning it with the lug until the spring bar engages mechanically. This operation requires some practice: we recommend consulting an expert if you are a first-timer.

Which aftermarket straps are compatible with the Oris Williams 01 773 7685 4184-Set RS?

All straps with a 20mm lug width are compatible with the 01 773 7685 4184-Set RS. Our collection includes leather (alligator, calf, shell cordovan), NATO straps in Cordura canvas, and fluoroelastomer rubber straps. Each strap is designed for this standard measurement, guaranteeing stable and secure attachment without modifications to the case.

What is the average lifespan of a leather strap for the Oris Williams 01 773 7685 4184-Set RS?

The durability of a leather strap depends on use and tanning method. Vegetable-tanned leather subjected to daily use retains functionality for 3-5 years, after which repeated flexing weakens the fibres. Alligator and shell cordovan, being more robust leathers, offer superior durability (5-7 years). Fluoroelastomer rubber easily exceeds 5-7 years without significant degradation. Regular maintenance (cleaning, leather conditioning) extends durability by approximately 30%.

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