The Acoustic Junior GO amplifier offers full, natural performance and best-in-class quality for acoustic-electric guitar and vocals. This powerful portable system has two channels designed for instrument or microphone use, each with studio-quality effects. Other convenient features include Bluetooth wireless audio streaming and a built-in 90-second looper perfect for solo performances. And its rechargeable battery means you can unplug it from the wall and take your music anywhere!FeaturesRechargeable lithium-ion battery with 5 hours of playback at full volume12 hours at moderate volume; 90-second looper with Record / Dub, Play / Stop, and Undo buttonsBluetooth pairing for audio streaming from phones and tabletsUniversal voltage for global use.