61 Full-size keys with touch response and Key Lighting system. Chordana Play app - use iOS or Android to learn to play any MIDI file. 600 AiX powered tones and 200 full accompaniment rhythms. Powerful bass-reflex stereo speaker system with surround effect. Class compliant USB-MIDI connects to Chordana Play app. Headphone plug for private listening. 10 Master EQ. 160 Built-in songs. Standard pedal and microphone inputs. Amplifiers: 2.5W + 2.5W. Uses 6 AA batteries for cordless use (NOT included). AC Power adapter and music rest included.