Oris
Big Crown 01 401 7781 4081-Set— lug 20mm
Oris Big Crown 01 401 7781 4081-Set: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
Oris 01 401 7781 4081-SetThe essential strap measurement.
Browse 20mm straps →01 401 7781 4081-Set
Oris caliber Oris 401 Hours, Minutes, Small Seconds | Date
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Big Crown
FAQ
What is the lug width of the Oris Big Crown 01 401 7781 4081-Set?
The lug width of the Oris Big Crown 01 401 7781 4081-Set is 20 millimetres. This measurement is taken between the inner edges of both lugs. It is compatible with standard 20mm straps, ensuring broad availability in the bespoke strap market.
What is the best strap for the Oris Big Crown 01 401 7781 4081-Set?
There is no single universal choice, as preference depends on intended use and personal style. For vintage aesthetics aligned with the Big Crown's heritage, alligator in cognac brown or English calfskin are established choices. For functional requirements and waterproofing, ballistics NATO or vulcanised rubber offer superior performance. The yellow gold case pairs particularly well with warm tones (cognac brown) or neutral colours (black, grey).
How do I change the strap on the Oris Big Crown 01 401 7781 4081-Set?
Position the watch dial-down on a soft surface. Using a spring bar tool (a dedicated instrument with two curved ends), gently depress one of the horizontal pins that attach the strap to the lugs, sliding the old strap outward. Repeat on the opposite end. Insert the new strap by threading it onto the exposed pin ends and pressing until it clicks into place.
Are aftermarket straps compatible with the Oris Big Crown 01 401 7781 4081-Set?
Yes, any strap with a 20mm lug width is compatible with the Big Crown. Bespoke leather straps from specialised suppliers—including vegetable-tanned leather or technical textiles—fit perfectly onto the case's standard lugs. It is advisable to verify strap thickness so it remains proportionate to the case (maximum 4–5mm).
How long does a natural leather strap typically last on the Oris Big Crown?
Longevity depends on frequency of wear, climate conditions, and material quality. A premium leather strap (alligator, calfskin, shell cordovan) worn daily typically retains acceptable function and aesthetics for 2–4 years. Leather absorbs moisture, develops natural patina, and gradually relaxes over time. Periodically rotating between different straps significantly extends the useful life of each, a practice recommended for watches of this calibre.