Upgrade your Seiko Prospex watch with this genuine black Seichu fabric strap. Made in Japan, this one-piece strap is handmade and personalised to fit your wrist perfectly. It has a width of 20mm and is compatible with the SLA057 model. With a theme of diver, this strap is perfect for those who love water sports. It is suitable for men and is not a vintage item. The strap is durable and made with high-quality materials, ensuring that it will last for years to come.