Rolex
Datejust 31 278271-0024— lug 16mm

The Rolex Datejust 31 reference 278271-0024 has a lug width of 16 mm. This measurement should be taken with a digital calliper positioned between the two lugs on the inner side of the case. This is a specific dimension requiring aftermarket straps produced expressly for 16 mm — it cannot simply be adapted from wider sizes.

For the Datejust 31 in Rolesor Everose, a vegetable-tanned alligator belly-cut strap is the most coherent choice given the watch's formal register. Shell cordovan is an equally refined alternative, offering a distinctive patina and exceptional durability. For everyday wear, wax-treated box calf leather provides both resistance and understated elegance without competing visually with the two-tone case.

Strap replacement requires removing the spring bars that secure the original bracelet to the case lugs. Use a forked or pointed spring bar tool, inserting it into the lateral hole of the lug or directly into the spring bar slot. It is advisable to work on a watch cushion to protect the Everose gold surfaces. Replacement spring bars should be 1.8 mm in diameter and compatible with the 16 mm lug spacing.

Yes. The quality aftermarket offers a range of 16 mm straps compatible with the Datejust 31. Milano Straps produces handcrafted options in alligator, box calf, shell cordovan and rubber, all with standard 16 mm attachments and spring bars included. Compatibility is determined solely by lug width, regardless of the strap's origin.

Strap longevity depends on the material, frequency of use and level of care. A quality vegetable-tanned alligator strap, rotated regularly and kept away from prolonged exposure to sweat and moisture, will maintain its structural and aesthetic integrity for 3 to 5 years. Shell cordovan, due to its dense fibrous structure, can exceed 5 years. Box calf leather, while less exclusive, easily reaches 2 to 4 years with basic maintenance. Milano Straps provides an 18-month guarantee against manufacturing defects.