Fender Mustang Micro All-in-one personal headphone amplifier with onboard DSP 12 amp models from Mustang GTX for a wide range of clean and dirty tones 13 effect models with parameter modify control Bluetooth audio streaming with audio/video sync for playing along in real time Rechargeable lithium ion battery (charged via USB) https://www.youtube.com/watch?v=7Ai0Rcv7sjY&t=9s