Oris · ProPilot
Strap for Big Crown ProPilot Altimeter Meter / Bracelet
Takes 23 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The ProPilot 01 733 7705 4164-Set 8 23 19, seen from the bench
Frequently asked questions
What is the exact lug width of the Oris ProPilot 01 733 7705 4164-Set 8 23 19?
The lug width of the Oris ProPilot 01 733 7705 4164-Set 8 23 19 is 23mm, a rare and non-standard specification. This measurement should be verified by placing a digital calliper perpendicularly between the lug shoulders at the point where they widen. A 22mm strap would be too tight; a 24mm strap forced into the lugs risks damaging both the strap and the case lugs.
Which strap is recommended for the Oris ProPilot 01 733 7705 4164-Set 8 23 19?
The 01 733 7705 4164-Set 8 23 19 is ideally paired with bespoke straps in alligator with vegetable tanning, thick calf leather (minimum 1.4mm), or technical NATO fabrics in ripstop nylon for instrumental use. For marine environments or sports activity, FKM rubber with gummed texture offers grip and practicality. The material should reflect the functional and aviation character of the watch.
How do you correctly change the strap on this model?
To change the strap on the 01 733 7705 4164-Set 8 23 19, secure the watch in a soft rubber watch holder to protect the case. Use a spring bar tool to extract the spring that supports the old strap, applying gentle inward pressure to disengage one of the lugs. Remove the strap, insert the new one by aligning the lug holes, and reinsert the spring bar using the spring. Ensure it is firmly seated on both sides before releasing the watch.
Which aftermarket 23mm straps are compatible with the Oris ProPilot 01 733 7705 4164-Set 8 23 19?
On milanostraps.it you will find a comprehensive selection of 23mm straps compatible with the 01 733 7705 4164-Set 8 23 19: leather (alligator, shell cordovan, calf), NATO fabrics in various colours, and FKM rubber straps. All are crafted with sartorial artisanship and ready to ship. You can customise them online by choosing material, colour and finishes.
How long does a leather strap last on a watch like the Oris ProPilot 01 733 7705 4164-Set 8 23 19?
A quality leather strap, such as those with vegetable tanning, on a watch of this size typically lasts 3-5 years with moderate daily use. Durability depends on exposure to moisture, body perspiration, and maintenance. Leather should be kept dry after use, and occasionally treated with a conditioner specific to the tanning type. Repeated impacts against the case accelerate wear; occasional use extends the strap's lifespan considerably.
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.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only