Yamaha PSR-EW310, Keyboard, 76 Standard keys with velocity sensitivity, 622 Sounds (incl. 22 drum / SFX kits, 339 XG lite and 20 arpeggios), 205 Styles, 154 Internal songs, 48 Voice polyphony, 2 Track sequencer / 5 user songs, 1 One touch setting per style, Effects: Reverb, Chorus, Master EQ, Harmony, Arpeggio 176 types, Duo mode, SMF format 0 & 1, Registration memory, Metronome, Transpose, Includes Keys to Success learning function, Backlit LC display, USB-to-Host (Midi & Audio), AUX In (Stereo mini), Headphone jack, Connection for sustain pedal, Speaker system: 2x 2.5 watts, Battery operation possible (6x AA, not included), Dimensions (W x D x H): 1151 x 369 x 118 mm, Weight: 5.4 kg, Includes power supply PA-130 and music stand