The watch band is made of high-quality leather material, waterproof, sweat resistant, soft and comfortable. Applicable model: compatible with Citizen AT8020-03L H800-S081165 E168 B740 B741-S066450 BJ2110 BJ2111 BJ2115 BJ2117 BJ2118 BJ2119 BN0085 BN0088 watch strap. Bandwidth: See detailed picture for specific dimensions. What you get: a wristband, 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.