This curved end rubber watch strap is perfect for Certina DS Action Powermatic 80 Diver owners. Whether you're in daily life or exploring underwater, it's a great companion. The high - tensile silicone rubber strap is durable and flexible. It has a heavy - duty 316L stainless steel buckle for a secure fit. Although exact dimensions aren't given, it's designed to precisely fit your watch for a seamless look.