The watch strap is made of high-quality resin material, which is waterproof, sweat-proof, soft and comfortable. Applicable models: Our watch straps are compatible with Casio GA-2100, GA-2110 and GA-B2100 models. Bandwidth: The specific dimensions are subject to the detailed pictures. What you get is: a wristband, a tool and two 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 them. 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.