Technical Archive

Oris
ProPilot 01 798 7773 4284 HB-ZQL-Set— lug 20mm

Oris ProPilot 01 798 7773 4284 HB-ZQL-Set: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Big Crown ProPilot GMT Rega Fleet Airbus Helicopters H145 - HB-ZQL

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Oris 01 798 7773 4284 HB-ZQL-Set
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

01 798 7773 4284 HB-ZQL-Set

Movement

Oris caliber Oris 798 Hours, Minutes, Seconds, Additional 24 Hour Hand (adjustable) | Date

The Heritage

The Oris ProPilot 01 798 7773 4284 HB-ZQL-Set represents contemporary aviation watchmaking tradition. The 41.5mm satin steel case features an asymmetrical crown at 2 o'clock for ergonomic protection during flight operations. The Oris 798 caliber, an automatic movement based on Sellita SW 500 with proprietary GMT module, displays three time zones simultaneously via independent 24-hour hand. The 20mm lug width accommodates the precise case geometry and ensures proper strap proportions without extending beyond the lugs.

FAQ

What is the lug width of the Oris ProPilot 01 798 7773 4284 HB-ZQL-Set?

The lug width is 20mm. This measurement is the standard reference for all straps compatible with this model. Measuring the lug means identifying the internal distance between the two holes where the spring bars reside. Never use straps of different widths (19mm or 21mm) as they would cause visual asymmetry and potential strap instability.

Which strap is most suitable for the Oris ProPilot 01 798 7773 4284 HB-ZQL-Set?

For this aviation-military timepiece, the most appropriate straps are NATO in cotton-polyester (coherent with the instrumental identity), alligator in vegetable tanning (for daily elegance with visible ageing), red-mahogany shell cordovan (for understated luxury), calf leather in neutral tones (honey or grey), and FKM rubber for aquatic environments. Choice depends on intended use and desired context.

How do you change the strap on the Oris ProPilot 01 798 7773 4284 HB-ZQL-Set?

Strap change is accomplished via spring bars, the small pins that pass through the lugs. Use a spring bar tool or dedicated implement to compress the internal spring mechanism, then extract the pin from the hole. Repeat on the other side. Insert the new strap by aligning the holes with the pin ends, then compress the spring mechanism to secure. It is advisable to perform the operation on a soft, flat surface to prevent damage.

Can I use an aftermarket strap on this Oris ProPilot?

Yes, any strap with a 20mm lug width is compatible with the Oris ProPilot 01 798 7773 4284 HB-ZQL-Set. Milanostraps.it offers a selection of artisanal straps in various materials (leather, NATO, rubber) specifically measured at 20mm. Always verify that the width is correct before purchase and that the strap is crafted from superior materials for long-term durability.

How long does a leather strap last on an aviation watch like the ProPilot?

Durability depends on material and usage. An alligator strap in vegetable tanning guarantees 18-36 months of daily wear before replacement is necessary (though ageing is part of the aesthetic). Shell cordovan, thanks to superior density, can exceed 4-5 years. Calf leather has intermediate durability (24-40 months). Exposure to humidity, heat, and UV rays accelerates wear. Minimal maintenance (occasional conditioner application) significantly extends strap life.