Strap matcher

Best straps for the Rolex Day-Date 40

21 mm lugs, 40 mm case, reference 228238 (since 2015). Try a strap below; the drawing is to scale.

Rolex Day-Date 40 on a gold five-link bracelet
Strap
Colour: Gold
Strap width21 mm
At the buckle17 mm
Lug to lug47 mm

Looks that work on the Rolex Day-Date 40

Rolex Day-Date 40 specs

Made
since 2015
Case
40 mm × 12.2 mm thick
Lug width
21 mm
Lug to lug
47 mm
Case material
18k yellow gold
Movement
Calibre 3255, automatic
Water resistance
100 m
Nickname
President

From the maker's published figures, gathered with AI help and not yet checked against a watch in hand. Measure your lugs before you buy.

Strap size for the Rolex Day-Date 40

What size strap fits the Rolex Day-Date 40?

The Rolex Day-Date 40 takes 21 mm straps: its lug width is 21 mm. A leather strap will usually taper to 19 mm at the buckle.

How big is the Rolex Day-Date 40?

The case is 40 mm across, and about 47 mm from lug tip to lug tip.

What strap looks best on the Rolex Day-Date 40?

Good options are a dark brown leather strap, a grey suede strap, a gold mesh bracelet. Try them all on the drawing above.

Sizes come from published specs. Check yours before you buy: how to measure lug width.