61 full-size keys with touch response Stereo grand piano plus 60 other AiX-powered Tones Powerful bass-reflex stereo speaker system with surround effect Easy one-button recorder Strap pins for playing anywhere Class-compliant USB-MIDI connects to free Chordana Play app Optional WU-BT01 Bluetooth MIDI/Audio adapter Optional 6xAA battery power (AC adapter and music rest included)