AC Adapter For Casio CTK-631 CTK-691 CTK-540 CTK-555L Keyboard Wall Charger Antoble products are made with the highest quality materials tested by manufacturer to match and/or exceed specifications of OEM products. Industry Quality : Over voltage protection, Over heat protection, CE. Build in Dynamic IC, Charger IC & Power fuse for rapid charging and over charge protection. Total cord length is extended to 6.5ft / 2M. Note: This product has two styles as the last picture shows. We will send out random styles.