Thomann SP-320, Digital Piano, 88 Lightweighted velocity sensitive keys, 12 Sounds, 12 Demo songs, 32-Voice polyphony, Layer mode, Reverb, Chorus, Metronome, Tempo, Headphone jack, USB to host - MIDI & Audio, Windows 8 or later, Mac OSX 10.8 or later, Line Out (L/R), Sustain pedal connection, Optional battery operation (6x LR20 D Mono - not included), Speaker system: 2x 20 watts, Dimensions (W x D x H): 1275 x 275 x 85 mm, Height including music stand: 1000 mm, Weight: 9 kg, Colour: Black, Includes power supply, sustain pedal and music stand, Suitable protective cover: Article no. #497390# (not included)