Seiko 4HX0JB Genuine "Monster" Diver Strap 20mm, Black Rubber
- Fits watches with 19 millimeter (3/4 inch) lug width, including many Casio Databank watches.
- Made of polyurethane, a soft and flexible synthetic material that is more durable than rubber or plastic.
- Sizing holes accommodate lengths from 4 to 7 inches (101 to 178 millimeters).
- entire watch strap measures 7 5/16 inches (186 millimeters) long..
- this watch band can be used underwater including for swimming.