SEIKO 18mm wide with SEIKO [Seiko] D-buckle, push-button type, logo, silver.

Buckle width --- 18mm (This is not the width of the watch case.) Stainless steel with SEIKO logo Thickness -- Suitable for belts up to approximately 3.5mm. Buckle width: 18mm (not the width of the watch case). Stainless steel. Features the SEIKO logo. Suitable for straps up to approximately 3.5mm thick.