Selection of high quality rubber material, waterproof, sweat proof, soft and comfortable. The Replacement Fit for casio MDV106-1A AMW320R AMW320D series wristband. Bandwidth :22mm See detailed picture for specific dimensions. What you get: a set of straps, a tool, and three spring pins. After receiving the strap, please do not rush to install, first compare with your original strap and dial, determine the appropriate, and then install. If you have any questions, please feel free to leave a message to customer service, customer service will reply to you within 24 hours