Rolex
Datejust 31 278273-0020— lug 16mm

The lug width of the Rolex Datejust 31 278273-0020 is 16 millimetres. This measurement is specific to the 31mm case in the two-tone stainless steel and yellow gold configuration. To verify, measure the internal space between the two upper lug attachments where the retaining spring is housed.

High-quality alligator leather is the most natural choice for the Datejust 31 278273-0020, as its fine grain and warm patina reflect the two-tone elegance of the watch. Vegetable-tanned calf offers versatility and fascinating ageing, whilst shell cordovan guarantees unparalleled depth of colour. For more casual contexts, a cotton NATO maintains aesthetic rigour.

The Datejust 31 strap is changed using the special screwdriver supplied by Rolex or a very fine flathead tool. First remove the retaining spring (elastic passant), then extract the pins from the lugs. Insert the new 16mm strap under the spring, reinsert the pins and ensure the spring is positioned correctly. If you are inexperienced, consult a qualified watchmaker.

Yes, any aftermarket strap with a 16mm lug width is compatible with the Datejust 31 278273-0020. High-quality artisanal straps from specialist suppliers such as Milano Straps guarantee craftsmanship and dimensional precision equal to or superior to original Rolex straps, with the possibility of customisation and material selection.

The lifespan of a leather strap depends on material quality, frequency of use and maintenance. A high-end artisanal alligator or shell cordovan strap can last 3-5 years with regular wear, developing a fascinating patina over time. Vegetable-tanned leather tends to wear more quickly if exposed to constant moisture. Regular maintenance — drying after water contact, avoiding direct heat sources — significantly extends longevity.