Strap for Rolex Oyster Perpetual 31 277200

The lug width of the Rolex Oyster Perpetual 31 ref. 277200 is 16mm. This measurement should be taken internally between the two lugs using a digital calliper, at the point where the strap meets the case.

For the ref. 277200, alligator leather with vegetable tanning or box calf are the recommended choices, in 16mm width tapering to 14mm at the buckle. A steel deployant clasp suits more formal pairings; a nylon NATO strap works well for casual wear. The ideal colour choice depends on the dial colour.

Strap replacement requires a spring bar tool (double-pronged) inserted into the recesses on each side of the lug. Applying gentle pressure to release both ends of the spring bar allows the original strap to be removed and a new 16mm-compatible strap to be fitted. Always work on a soft surface to avoid scratching the case.

Yes. Any strap with a 16mm lug width is geometrically compatible with the ref. 277200. For quality artisan straps, it is important to verify that the supplied spring bar has the correct diameter for Rolex Oyster lugs and that the strap taper is appropriate for the 31mm case.

The lifespan of a leather strap depends on the quality of the hide and care during use. An alligator or box calf strap with vegetable tanning, kept away from water, prolonged perspiration, and solvents, will maintain structural and aesthetic integrity for 3 to 5 years with daily wear. Casati Milano straps carry an 18-month guarantee against manufacturing defects.