Completely wireless guitar amplifier with newly developed BOSS technology delivering the solid sound of Rock with an ultra-low latency custom wireless transmitter that connects to any electric guitar and charges while docked in the amplifier The transmitter provides 12 hours of playing time on a single charge, automatically entering Standby mode to conserve battery when no activity is detected Always ready to use, with Motion Sensing technology in the transmitter that instantly wakes the amplifier when it is in Standby power-saving mode Premium sounds derived from the Katana series of professional stage amplifiers, with five magnificent amplification characters and access to over 50 world-class BOSS effects Six onboard memory slots to store your favorite effect and amplifier settings Powerful stereo speaker system with full-range sound and up to 30 watts of power* Edit and organize sounds wirelessly with the BOSS Tone Studio app for iOS and Android mobile devices Play along with music streamed wirelessly from a mobile device via Bluetooth® Powered by eight AA batteries or the included AC adapter Aux in ports to connect wired devices, and headphones/recording out for silent practice and music production *The Katana-Air produces 30 watts of power when connected to an AC outlet, and 20 watts of power when operated with batteries.