Ultra-portable and easy to use guitar multi-effect with the powerful BOSS GT-series engine, which gives you access to a huge selection of world-class amps and effects for all types of music. A streamlined interface enables quick and intuitive sound creation, while an assignable control switch and expression pedal provide dynamic real-time effects adjustment. By connecting to BOSS Tone Central, you can download free pro patches, editing software, and more. Four AA batteries provide up to seven hours of playing time.