This is a Blackstar Fly3 Bluetooth guitar amplifier. It can be powered by six AA batteries. (Adapter not included.) It has Bluetooth, so you can play your favorite songs from your smartphone or other devices for practice. It's very convenient to be able to control your smartphone while practicing. It can also be used as a Bluetooth speaker. This is a used item and has been stored at home, so please understand this before purchasing. I used it indoors for about a year. As of 2026/1/13, there are no operational issues. #blackster #fly3 #Bluetooth #guitaramp #Bluetoothspeaker #minispeaker #miniamplifier #forhomepractice #forpractice #forhomestudy #forhome #forhousehold #blackstar #fly3bluetooth #amplifier #smallamplifier #guitar #electricguitar #acousticguitar #acoustic #practiceamp #homestudy #rentalOK #musicequipment #musicalinstruments #musicappreciation