This watch strap is perfect for Omega Seamaster Diver 300M owners who love an active lifestyle. Whether you're diving, exercising, or just going about your daily routine, this strap will keep up with you. It's made of premium liquid silicone rubber and has a heavy - duty 316L stainless steel buckle. While the exact size and weight aren't specified, it's designed to fit the Omega Seamaster Diver 300M precisely for a comfortable and secure wear.