Oris · ProPilot

Strap for Big Crown ProPilot GMT Rega Fleet Airbus Helicopters H145 - HB-ZQI

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

Lug width20 mm
Case diameter42 mm
Reference01 798 7773 4284 HB-ZQI-Set
FamilyProPilot
MovementOris caliber Oris 798 hours, minutes, seconds, Additional 24 hours Hand (adjustable) | date
Year2021
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 01 798 7773 4284 HB-ZQI-Set

Selected for the 20 mm lug width

All 20 mm straps →

The ProPilot 01 798 7773 4284 HB-ZQI-Set, seen from the bench

The ProPilot is equipped with the Oris 798 caliber with hour, minute, second, adjustable 24-hour indication and date functions. The watch features 20mm lugs and is aimed at the civil aviation sector. The movement offers a second time zone indication through an additional 24-hour hand.

Frequently asked questions

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

The lug width of the Oris ProPilot 01 798 7773 4284 HB-ZQI-Set is 20mm. This measurement, calculated between the lugs of the case, is characteristic of the model and ensures specific compatibility with straps of identical width.

Which strap pairs best with the Oris ProPilot 01 798 7773 4284 HB-ZQI-Set?

For the smoked dial of the ProPilot 01 798 7773 4284 HB-ZQI-Set, we recommend an alligator strap with vegetable tannin in natural cognac tone, which creates warm-cold contrast emphasizing the dial's sobriety. Alternatively, a dark blue NATO or black alligator maintains formal monochromatic harmony.

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

The strap is changed using a spring bar tool, inserting the flat tip under the spring bar pin from the case inward, lifting the spring arm until the pin clicks out. Repeat on the other side. Insert the new pins into the strap and align with the case holes, pressing until they click.

Which third-party strap is compatible with the Oris ProPilot 01 798 7773 4284 HB-ZQI-Set?

Any strap with a 20mm lug width is compatible. MilanoStraps offers a selection of vegetable-tanned leather, NATO, rubber and shell cordovan straps, all calibrated to 20mm width and tested for the ProPilot 01 798 7773 4284 HB-ZQI-Set.

How long does a leather strap last on the Oris ProPilot 01 798 7773 4284 HB-ZQI-Set?

A vegetable tanned leather strap typically lasts 18-36 months with moderate daily wear. Longevity depends on frequency of use, humidity exposure and care. The natural patina that develops is not wear but accumulated beauty over time.

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