Personal headphone amplifier for guitar and bass with Bluetooth connectivity. - Model Name: KATANA-GO - Brand: BOSS - Connectivity: Bluetooth - Intended Use: For guitar and bass - Included: USB cable Thank you for viewing. The KATANA:GO is a guitar/bass headphone amplifier that provides a top-of-the-line playing experience. In a smart, palm-sized enclosure, it features dynamic and responsive KATANA Amp sound and a wide variety of high-quality BOSS effects. It also comes with a variety of preset memories that are ready to use. Furthermore, with the STAGE FEEL function using BOSS's spatial audio technology, you can enjoy immersive playing that you can't get with regular headphones, and share tones created with users around the world. It's packed with unique features. From those just starting out on guitar/bass to experienced players who want to play more easily, the KATANA:GO will enrich the daily lives of all guitarists/bassists. I have hardly used it. Operation has been confirmed. It is also charged, so you can use it immediately. It will be shipped wrapped in bubble wrap. Thank you.