Oris · ProPilot

Strap for Big Crown ProPilot GMT Rega

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter45 mm
Reference01 748 7710 4284-Set
FamilyProPilot
MovementOris caliber Oris 748 Additional 24 hours Hand (adjustable), hours, minutes, small seconds | big date
Year2018 - 2018
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 ProPilot 01 748 7710 4284-Set

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The ProPilot 01 748 7710 4284-Set, seen from the bench

The Oris ProPilot features the Oris 748 automatic calibre with indication of hours, minutes, small seconds and big date. It has an additional 24-hour hand adjustable for monitoring a second time zone. The case has 22mm lugs for the strap.

Frequently asked questions

What is the lug width of the Oris ProPilot 01 748 7710 4284-Set?

The lug width of the Oris ProPilot 01 748 7710 4284-Set is 22mm. This measurement represents the distance between the inner edges of the two pins that secure the strap to the case. It is an intermediate standard that offers exceptional versatility, allowing the use of leather, NATO, rubber, and high-quality synthetic strap solutions.

Which strap is recommended for the Oris ProPilot 01 748 7710 4284-Set?

For the Oris ProPilot 01 748 7710 4284-Set, we recommend three primary options based on intended use. A NATO strap in synthetic twill offers maximum durability and resistance to extreme conditions. A calf leather strap with vegetable tanning combines elegance and practicality, with a lifespan of 4-6 years. A vulcanised rubber strap is ideal for underwater activities and high-humidity environments. Your choice should reflect your primary usage context.

How do I change the strap on my Oris ProPilot 01 748 7710 4284-Set?

Changing the strap on the Oris ProPilot 01 748 7710 4284-Set requires a spring bar removal tool. Gently push the suspension pin inward with the tool to release the current strap; align the new strap holes with the pins and insert them until the spring fully engages. Ensure the spring is completely secured before releasing your grip. Alternatively, many professional watchmakers offer this service complimentary or at minimal cost.

What aftermarket straps are compatible with the Oris ProPilot 01 748 7710 4284-Set?

All straps with a 22mm lug width are compatible with the Oris ProPilot 01 748 7710 4284-Set. Milano Straps provides a curated selection of straps in vegetable-tanned alligator, calf leather, premium NATO, synthetic rubber, and shell cordovan. Each strap is engineered to integrate seamlessly with the ProPilot's aesthetic and functionality, maintaining the same quality standards as the Swiss manufacture of Oris.

How long does a leather strap last on the Oris ProPilot 01 748 7710 4284-Set?

The lifespan of a leather strap on the Oris ProPilot 01 748 7710 4284-Set depends on leather type and maintenance practices. A calf leather strap with vegetable tanning typically lasts 4-6 years with monthly cleaning using a damp cloth and annual conditioning with specialised balms. Shell cordovan, thanks to its fibre density, can exceed 7-8 years. The patina developing over time through UV exposure imparts character and individuality. Alligator, being more delicate, requires protection from corrosive liquids such as coffee, alcohol, and perfumes.

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