Yamaha SX-900 61 keys standard keyboardMIDI song file capacity : 3MB per file Pre installed Expansion content 525 Styles, including 463 Pro Styles, 46 Session Styles, 10 DJ Styles and 6 Freeplay Styles Vocal Harmony and Synth Vocoder functions Audio Recording (WAV MP3) Intuitive and fast control with 7" color touch screen and Assignable function Chord Looper function 1337 Voices, including 252 Super Articulation Voices, 24 Organ Flutes! Voices. 56 Drum SFX kits Bluetooth Audio *may not