The watch strap is made of high-quality rubber material, which is waterproof, sweat-proof, soft and comfortable. Applicable models: Our watch straps are compatible with various watches, including Omega Seamaster Speedmaster, Rolex, Seiko, etc. (Note: Suitable for Omega 45.5mm dials, etc. For Omega X Swatch, please select 20mm.) Bandwidth: For specific dimensions, please refer to the detailed pictures. It comes in two interfaces, 20mm and 22mm, suitable for wrists ranging from 9.8 inches to 7.6 inches. What you get is: a wristband, a tool and three spring pins. After receiving the watch strap, please do not rush to install it. First, compare it with the original factory strap and dial to ensure they fit, and then install it. If you have any questions, please feel free to leave a message for the customer service at any time. The customer service will reply to you within 24 hours.