Strap matcher

Best straps for the Frederique Constant Classics Index Automatic

20 mm lugs, 40 mm case, reference FC-303MC5B6. Try a strap below; the drawing is to scale.

Frederique Constant Classics Index Automatic on a dark brown leather strap
Strap
Colour: Dark brown
Strap width20 mm
At the buckle18 mm
Lug to lug (est.)47 mm

Looks that work on the Frederique Constant Classics Index Automatic

Frederique Constant Classics Index Automatic specs

Case
40 mm × 10.3 mm thick
Lug width
20 mm
Case material
stainless steel
Movement
FC-303, automatic
Water resistance
50 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 Frederique Constant Classics Index Automatic

What size strap fits the Frederique Constant Classics Index Automatic?

The Frederique Constant Classics Index Automatic 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 Frederique Constant Classics Index Automatic?

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

What strap looks best on the Frederique Constant Classics Index Automatic?

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.