Oris · ProPilot

Strap for ProPilot Coulson Limited Edition

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

Lug width20 mm
Case diameter41 mm
Reference01 400 7784 8786-Set
FamilyProPilot
MovementOris caliber Oris 400 Hours, Minutes, Seconds | Date
CaseTitanium, Carbon

Spring bar

Swiss Standard universal spring bars

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

The ProPilot 01 400 7784 8786-Set, seen from the bench

The Oris ProPilot is powered by the automatic Oris Caliber 400 with hour, minute, second and date indications. The watch features 20mm lugs and is part of the brand's aviation collection. The movement offers essential functions for daily use with an aesthetic inspired by the aeronautical world.

Frequently asked questions

What is the lug width of the Oris ProPilot 01 400 7784 8786-Set?

The ProPilot's lug width is exactly 20mm. This parameter indicates the distance between the two spring bars that support the strap. Accurately measuring the lug width is essential for identifying compatible aftermarket straps. In the ProPilot, this width is standard for medium-to-large watches and allows the use of structured straps without visual disproportion relative to the 41mm case diameter.

What is the best strap to pair with the Oris ProPilot?

Strap choice depends on primary usage. For formal settings, a black or anthracite grey alligator strap with deployante offers minimalist elegance. For private aviation, a quality vegetable-tanned calf in anthracite grey provides subtle texture and durability. For sporty combinations, a NATO in water-resistant canvas in aeronautical blue or muted grey-green reflects the watch's aviation purpose without excess militarism. For intensive use, structured black rubber with soldered lugs represents maximum practicality.

How do you change the strap on the Oris ProPilot 01 400 7784 8786-Set?

To change the strap, remove the two spring bars using a dedicated spring bar remover tool. Next, insert the new strap by aligning its lugs with the case lugs, applying light pressure until the pin clicks securely. Ensure the lug width is exactly 20mm; otherwise, the strap will not be compatible. We advise against improvised tools that could scratch the titanium case.

Are there quality aftermarket straps compatible with this model?

Yes, numerous artisanal strap manufacturers produce high-quality 20mm models. For the ProPilot, we recommend robust materials such as alligator, vegetable-tanned calf, shell cordovan, water-resistant canvas NATO, and structured rubber. Leather quality is decisive: verify that the tanning is vegetable-based and that molecular density allows natural moisture absorption without deterioration. Milanese artisans offer custom personalizations with rapid delivery.

What is the average lifespan of a leather strap for the Oris ProPilot?

A leather strap's lifespan depends on material, tanning method, and usage intensity. An alligator or calf subjected to vegetable tanning, used under ordinary conditions, guarantees 3-4 years of useful life. Shell cordovan, with patina developing naturally over time, can exceed 5 years. Intensive use in humid environments or aboard aircraft (perspiration, direct sun exposure) reduces lifespan to 2-3 years. Structured rubber offers superior durability (5-7 years) with no periodic maintenance, making it the most durable choice for those unwilling to change straps frequently.

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.

Request an appointment →

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