Yamaha PSR-SX900, Keyboard, 61 Velocity sensitive keys, New FSB keyboard, 1337 Voices + 56 Drum/SFX kits + 480 XG voices, 525 Styles, 128-Voice polyphonic, Keyboard parts up to Right Part 3, Assignable keys, joystick and live controller, Vocal Harmony and Synth Vocoder functions, Expansion Audio Style, XG/GM/GM2/GS sound compatible, DJ Styles, Arpeggio function, 1 GB internal expansion memory, Touch Screen display, Audio Link Multi Pads, Audio recorder/player in WAV and MP3 format, Pitch shift, Chord looper, Bluetooth audio, Headphone jack, Mic/Guitar input, MIDI In/Out, USB to host, USB to device (2x), AUX input, MAIN output (L/L+R, R), SUB (AUX) output (1,2 (L/L+R, R), Sustain pedal connection, Speaker system with 2 x 15 W, Dimensions (W x D x H): 1017 x 431 x 139 mm, Weight: 11.5 kg, Includes power supply unit (PA-300C), operating instructions and music stand, Suitable video adapter: Article no. #431245# (not included), Suitable protective cover: Article no. #497394# (not included)