Strap for Big Crown Complication Stainless Steel / Silver

The lug width is precisely 20mm. This measurement defines the space between the case lugs where the strap is inserted. Verify by placing a ruler between the inner edges of the two lugs: you will find exactly 20mm. Our straps are engineered to this specific tolerance.

For the aviatory character of this timepiece, we recommend alligator in deep tones (brown, black) with vegetable tanning, or English cognac calf leather. Military-spec NATO in grey or navy canvas is an authentic choice, reversible in seconds. Structured rubber remains an option for extended marine conditions. The choice depends on primary use and the aesthetic patina desired over time.

Use a spring bar tool to remove the metal bars holding the strap in the case lugs. Position the small lever beneath the bar and press gently downward to release one side, then extract the bar completely. Repeat on the other lug. Align the new strap holes with the case lugs and reinsert the metal bars until you hear the safety click. The operation requires 2-3 minutes.

Yes, any quality 20mm strap is perfectly compatible. Milano Straps offers a curated collection of handcrafted models specifically tested for this width: alligator, calf, NATO, rubber. Ensure the strap width at the attachment point does not exceed 19.8mm to guarantee insertion without forcing. Our straps are dimensioned according to optimal construction tolerances.

Durability varies based on material and frequency of use. Vegetable-tanned alligator maintains structural integrity for 3-5 years of daily wear, developing progressive and appealing patina. English calf lasts 2-4 years before replacement becomes necessary. Rubber resists 4-6 years under normal conditions. Natural wear—fine creasing, colour shift—characterises authenticity, not defect. Always preserve your strap away from sustained heat and prolonged humidity.