Operation confirmed. Please understand that this is a used item before purchasing. --Excerpt from the official page below ・Product Description The Mustang™ Micro is an ultra-compact personal guitar amplifier featuring a wealth of preset tones from the popular Mustang™ amp series. Simply plug the Mustang™ Micro directly into your guitar, connect your headphones, and then select your amp and effects. From beginners to professionals, you can easily get great tones right away, and it can be used widely at home or on the go. With a Bluetooth connection, you can also play along with your favorite tracks or tutorial videos. ・Features All-in-one personal headphone amplifier Equipped with 12 amp models highly rated in the Mustang GTX 12 effects with adjustable parameters EQ control Intuitive volume control Bluetooth connection allows you to stream your favorite songs and videos from your smartphone, PC, etc. Movable jack that can be attached to most guitars & basses USB C terminal allows PC connection as an audio interface USB C terminal also allows firmware updates