Rolex Day-Date 40

Every Rolex Day-Date 40 reference takes a 20 mm watch strap: all 161 we measured.

Shop 20 mm

Rolex Day-Date 40 lug width by case size

161 references measured. Updated 2026-11-03.

CaseLug widthReferencesWatch strap attachmentFor example
40 mm20 mm161—228206, 228206-0001, 228206-0002

Every Rolex Day-Date 40 reference