Strap matcher

Best straps for the Swatch Sistem51

20 mm lugs, 42 mm case (since 2013). Try a strap below; the drawing is to scale.

Swatch Sistem51 on a black leather strap
Strap
Colour: Black
Strap width20 mm
At the buckle18 mm
Lug to lug48 mm

Looks that work on the Swatch Sistem51

Swatch Sistem51 specs

Made
since 2013
Case
42 mm × 13.6 mm thick
Lug width
20 mm
Lug to lug
48 mm
Case material
plastic
Movement
Sistem51, automatic
Water resistance
30 m

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 Swatch Sistem51

What size strap fits the Swatch Sistem51?

The Swatch Sistem51 takes 20 mm straps: its lug width is 20 mm. A leather strap will usually taper to 18 mm at the buckle.

How big is the Swatch Sistem51?

The case is 42 mm across, and about 48 mm from lug tip to lug tip.

What strap looks best on the Swatch Sistem51?

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

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