Sony has been in the business of producing world-class sound equipment and other devices that help make our lives more exciting and comfortable for many years. Its GTKXB90 speakers set the tone. We love that these tailgate speakers enable us to enjoy great music in larger groups without any issues. It comes with a manual, a rechargeable battery that delivers 16 hours of playback, and light effects. Experience that extra bass and listen to the punchy sound unique to Sony products and its Bluetooth speaker for tailgating. Other features include DJ effects, a setup guide, and an AC cord.