Rolex
Datejust 31 278344rbr-0019— lug 16mm

The lug width of the Rolex Datejust 31 reference 278344rbr-0019 is precisely 16 millimetres. This measurement is specific to the 31mm ladies' version and is narrower than the men's Datejust models, which feature 20mm lugs. Always verify compatibility with a caliper before purchasing a replacement strap.

Alligator leather in deep shades (black, mocha) accentuates the contrast with white gold and the diamond bezel, creating a sophisticated jewellery-like aesthetic. Full-grain calf leather offers daily versatility with pleasing ageing patina. For formal evening occasions, shell cordovan in burgundy achieves discreet elegance. Your choice depends on usage: occasional versus daily wear, formal or business contexts.

Strap replacement requires precision tools: spring bar tools and a clean, well-lit work surface. Gently remove the spring bars from the original lugs, insert the new strap, and secure the bars with symmetrical pressure. If you lack experience, consult a certified watchmaker or Casati Milano's service for guaranteed workmanship.

Yes, provided the lug width is exactly 16mm and the construction quality matches the watch's value. Artisanal straps in alligator, calf, or shell cordovan ensure superior aesthetics and durability compared to industrial production. Always verify that spring bars are stainless steel 316L to prevent oxidation.

A quality artisan-crafted leather strap with vegetable tanning lasts approximately 3–5 years of daily use. Durability depends on usage frequency, climatic conditions (humidity accelerates wear), and maintenance (regular cleaning, protection from saltwater and prolonged perspiration). Casati Milano straps include an 18-month manufacturing defect warranty and can be restored through aesthetic refurbishment.