Per OMEGA ROLEX Cinturino Orologio Silicone CURVO Gomma 20mm X 16mm S34A
The buckle sizes are 16mm. Buckle Size -16mm (can be swapped for Original 16mm buckle). Strap Material -Silicone Rubber. Buckle Material -Stainless Steel. Length -10cm (inc Buckle) / 13.5cm. Strap Colour -Black.