Technical Archive

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

Oris ProPilot 01 798 7773 4284 HB-ZQJ-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-ZQJ

Artisanal Note

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

Technical Specifications

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

The essential strap measurement.

Browse 20mm straps →
Reference

01 798 7773 4284 HB-ZQJ-Set

Movement

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

The Heritage

The ProPilot mounts the Oris caliber 798 with functions of hours, minutes, seconds, 24-hour adjustable hand and date. The watch features 20mm lugs and is characterized by the presence of a fourth hand dedicated to the 24-hour format. The movement provides multiple time indications through the integrated dual time zone system.

FAQ

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

The lug width of the Oris ProPilot 01 798 7773 4284 HB-ZQJ-Set is 20 millimetres. This specific measurement represents the historical standard of the ProPilot family and corresponds to the faceted lug with characteristic lateral grooves. To verify it correctly, measure with a digital calliper the distance between the inner edges of the two lugs, perpendicular to the case shoulder.

What is the best strap for the Oris ProPilot 01 798 7773 4284 HB-ZQJ-Set?

The best strap depends on use and personal preference. For an urban-formal context, an alligator with vegetable tanning is recommended, as it develops patina over time. For humid or marine environments, a vulcanised FKM rubber ensures durability and rapid drying. A canvas ballistic NATO offers versatility and tool-free changeover. All 20mm straps are compatible with this reference.

How do you change the strap on an Oris ProPilot watch?

Remove the original strap using a spring bar tool to release the elastic pins on either side of the case. Position the tool in the lateral groove of the lug and gently push to compress the internal spring. Once the first lug is free, repeat on the opposite side. Insert the new strap (20mm) by threading the fixed passant on the case side, then secure the other side with elastic pins until you hear a click.

Is an aftermarket strap compatible with the Oris ProPilot 01 798 7773 4284 HB-ZQJ-Set?

Yes, any aftermarket strap with a 20mm lug width is fully compatible with this reference. The Oris spring bars accommodate industrial standards. It is essential to verify the lug width before purchase: a measurement error results in excessive play or mechanical impossibility of insertion. Milanostraps.it offers a complete selection of 20mm straps in alligator, calf, NATO and rubber.

How long does a leather strap last on an Oris ProPilot watch?

The lifespan of a leather strap depends on the material, tanning method and usage. An alligator with vegetable tanning develops patina for 4–6 years of regular use, maintaining structural functionality for up to 8–10 years. Japanese shell cordovan extends this lifespan thanks to more compact fibre, potentially exceeding 10 years. Limiting factors: constant humidity, direct sunlight exposure, salt water spray. Periodic maintenance (cleaning, conditioning with natural oils) significantly extends the strap's life.