Strap for Big Crown Chronograph Stainless Steel / Silver

The lug width is 21 millimetres, a specific measurement characterising this model. This dimension represents the internal space between the spring bar attachment tubes. Precise measurement of this parameter is essential to ensure full compatibility of the strap with the case.

The ideal strap depends on intended use. For formal applications, we recommend leather in shell cordovan with vegetable tanning. For sports use, a NATO in ballistic polyamide ensures practicality and replaceability. For humid or saline environments, a fluoroelastomer rubber strap offers waterproofing and minimal maintenance.

The Big Crown uses spring bars. To replace: position the watch on a soft surface, use a pointed tool (PTFE spatula) to gently push the spring bar toward the inside of the lug tube and slide it laterally. Repeat from the other side. Install the new strap by reversing the procedure, ensuring that the spring bars remain firmly anchored.

Yes, provided the strap is specifically sized for 21 millimetres lug width. However, we recommend verifying the thickness of the case terminal (approximately 6mm on this model) to avoid constructive incompatibilities. Straps designed for other sizes may present excessive play or inadequate fit.

A quality leather strap, properly maintained, lasts from 3 to 5 years with daily wear. Durability depends on tanning method (vegetable tanning ensures superior longevity), moisture exposure and maintenance type. We recommend periodic cleaning with a damp cloth and annual conditioning with natural oils to preserve flexibility.