Casio CTK-2100 61 Key Personal Keyboard with New Voice Pad Feature Easy-to-play keyboard 61-key portable keyboard with wide range of tones, rhythms and learning capabilities 400 high-quality tones, 150 rhythms and auto accompaniments for Latin music Voice Pad allows you to play sampled sounds; connect CD or MP3 player for practicing along with favorite songs USB port and General MIDI support allows connection with a computer or another GM-compatible device Powered by 6 AA batteries or AC adapter (not included)