Oris · ProPilot X

Strap for Big Crown ProPilot X Calibre 115 Pink Dial

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

Lug width22 mm
Case diameter44 mm
Reference01 115 7759 7118-Set
FamilyProPilot X
MovementOris caliber Oris 115 Hours, Minutes, Small Seconds, Additional 24 Hour Hand (adjustable) | Power Reserve Indicator, Skeleton
CaseTitanium

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 X 01 115 7759 7118-Set

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The ProPilot X 01 115 7759 7118-Set, seen from the bench

The Oris ProPilot X 01 115 7759 7118-Set features a 44 mm titanium case housing the Oris caliber 115 automatic skeletonized movement, visible through a sapphire caseback with power reserve indicator, 24-hour function, hours, minutes, and small seconds. Water resistant to 100 metres with sapphire crystal and anti-reflective coating. The 22 mm lug width is proportionally matched to the case diameter for balanced aesthetics. Titanium crown provides intuitive grip.

Frequently asked questions

What is the lug width of the Oris ProPilot X 01 115 7759 7118-Set?

The lug width of the Oris ProPilot X 01 115 7759 7118-Set is 22 millimetres. This measurement refers to the distance between the strap attachment pins on the inner side of the case. It is essential to use straps specifically constructed for 22 mm lug width to ensure correct tolerances and secure fit. Precise measurement is performed using a digital calliper positioned between the pin shoulders, excluding the case itself.

What strap material is recommended for the ProPilot X 01 115 7759 7118-Set?

The ProPilot X 01 115 7759 7118-Set pairs excellently with various materials depending on intended use context. Genuine alligator creates fascinating aesthetic contrast between the titanium case brutality and leather tactility; vegetable-tanned calf develops noble patina over time; robust NATO straps in technical fabric amplify the functional, unconventional approach; medical-grade FKM rubber ensures secure grip and permanent UV resistance. Material selection depends on the desired balance between aesthetics and daily performance requirements.

How do I change the strap on my Oris ProPilot X 01 115 7759 7118-Set?

Strap replacement on the ProPilot X 01 115 7759 7118-Set requires a spring bar removal tool and technical precision. Position the tool in the access hole of the spring beneath the pin shoulder, lift slightly to retract the internal spring, and fully extract the pin. Repeat for both case sides. Insert new pins into the aftermarket 22 mm strap, realign with case shoulders, and press firmly until the spring lock engages audibly. Verify stability by gently pulling the strap to confirm secure attachment.

Are there aftermarket straps compatible with the Oris ProPilot X 01 115 7759 7118-Set?

Yes, numerous quality aftermarket straps are compatible with the Oris ProPilot X 01 115 7759 7118-Set. It is imperative to verify that the specified lug width is 22 millimetres: this measurement guarantees correct construction tolerances and structural security. Straps in alligator, calf, shell cordovan, NATO, and medical-grade rubber in 22 mm width are available through specialist artisans and dedicated online retailers. Exercise caution with mislabelled straps: independent digital calliper measurement is always recommended prior to purchase.

What is the expected lifespan of a leather strap for the Oris ProPilot X 01 115 7759 7118-Set?

The lifespan of a leather strap for the ProPilot X 01 115 7759 7118-Set depends on usage frequency, climate conditions, and specific material. An alligator or vegetable-tanned calf strap worn daily in temperate climates maintains structural integrity for 18-36 months before mechanical wear accelerates degradation. Prolonged direct sunlight exposure, humid tropical climates, and frequent contact with cleaning agents shorten this cycle. Shell cordovan, being denser fibrally, may extend lifespan to 3-5 years. Preventative maintenance—conditioning with specialist oils, drying after humidity exposure, and storage in controlled environments—substantially prolongs functional life regardless of material composition.

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