Strap for Fifty Fathoms Chronographe Flyback Stainless Steel / Bue / Bracelet

The lug width (ansa) of the Blancpain Fifty Fathoms 5085F.B-1140-71B is 23 mm. This measurement represents the distance between the two lugs that retain the strap on the case sides. It is essential to order a strap compatible with this specific measurement to ensure correct fit and wrist comfort.

For this stainless steel chronographic diving watch, we recommend alligator straps with vegetable tanning for smart-casual wear, shell cordovan for those who appreciate natural ageing, vegetable-tanned calf for balance between protection and patina, or rubber/polyurethane for frequent diving. A deployante buckle in stainless steel ensures greater robustness than a simple keeper.

Remove the strap by gently sliding a needle or toothpick through the lateral holes of the case to push the spring bars out. Insert the new strap by aligning the lugs with the spring bars, then press until the bar clicks into position. Verify that the strap is securely fastened before wearing the watch.

Yes, any strap with a 23 mm lug width is compatible with the 5085F.B-1140-71B. At Milano Straps you will find a selection of artisanal straps crafted by Casati Milano in various materials and colours, all suitable for this lug width.

A quality leather strap can last 3-5 years with daily use, up to 10 years with regular maintenance and protection from excessive moisture. Rubber straps maintain structural integrity longer, but leather develops a patina that adds character. Casati Milano straps are guaranteed 18 months against manufacturing defects.