Please read the profile before purchasing for a smooth transaction. This is the Roland digital wind instrument "Aerophone GO (AE-05)", allowing you to play casually anytime, anywhere. This compact body features 11 carefully selected sounds, including saxophone (alto, tenor, soprano, baritone), flute, and violin. The biggest advantage is that you can practice without worrying about your surroundings at night, thanks to the headphone jack. Also, with battery operation and a built-in speaker, you can enjoy playing anywhere without cables. Using the Bluetooth function, you can connect to a dedicated app to play along with music on your smartphone or add more sounds. [Condition of the product] Overall, there are no noticeable large scratches or stains. There are no signs of battery leakage inside the battery box on the back, and the terminals are clean. *Everything in the photos is included. ＜Accessories＞ Includes a genuine Roland soft case (carry bag). [Recommended points] Perfect for those who want to start playing the saxophone but are concerned about volume or location. You can learn the fingerings with the same feel as a recorder, so even beginners can enjoy playing immediately. Lightweight (approx. 695g with batteries) and easy to carry, it's an excellent choice for home practice or as a secondary instrument.