This strap is perfect for Omega Seamaster Diver 300M owners who love adventure. Whether you're navigating the seas, swimming, or just going about your daily life, it's up for the challenge. It's made from high - quality FKM rubber and has a polished 316 stainless steel buckle. While exact size and weight aren't specified, it's designed to fit your Seamaster Diver 300M snugly and comfortably.