Sinn 556 I on a steel three-link bracelet Looks that work on the Sinn 556 I
Strap size for the Sinn 556 I
What size strap fits the Sinn 556 I?
The Sinn 556 I 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 Sinn 556 I?
The case is 38.5 mm across, and about 45 mm from lug tip to lug tip.
What strap looks best on the Sinn 556 I?
Good options are an olive NATO strap, a tan leather strap, a taupe suede strap. Try them all on the drawing above.
Sizes come from published specs. Check yours before you buy: how to measure lug width.