Roland piano 61 keys Used only once with box and all its accessories. It works directly via electricity and by installing batteries. Its size is nice, you can take it anywhere with you. You can change the sound and tune of each key using touch buttons. High volume, you can raise and lower the sound. It connects to the phone via Bluetooth to play music while playing + an external Yamaha amplifier was purchased. Reason for selling: lack of time to use it. Asking price: 1500