Fender Mustang Micro headphone amplifier. I purchased this used, so I don't know how long it was used, but it works perfectly, including Bluetooth. The manual and cable are new. Please understand that this is a used item before purchasing. The Mustang Micro is a compact headphone amplifier for guitar with Bluetooth audio streaming. - Model Name: Mustang Micro - Functions: Bluetooth audio streaming, headphone amplifier - Controls: AMP, EQ, EFFECTS, MODIFY buttons - Connections: USB-C - Accessories: Instruction manual, charging cable Thank you for looking.