Selection of high quality silicone material, waterproof, sweat resistant, comfortable to wear. Perfect replacement for Casio PRG-80 PAG-80 PRW-1000 PRW-1100 watch. Bandwidth :20mm See the detailed picture for the specific size. You can get: a set of watch bands, 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