Casio WK-1630 76-Note Touch-Sensitive Portable Electronic Keyboard it has 6 speakers, however among them has a little smashed in speaker grill, however still functions fine.

　　The Casio WK-1630 has 76 touch-sensitive secrets, 32-note polyphony, programmable rhythm patterns, broadened digital effects, a modulation wheel, and separate line-out and headset jacks. With 232 tones, a split and layer function, 132 rhythm patterns, and a two-song, six-track memory, this keyboard provides a full set of functions for the newbie and intermediate keyboard gamer.

　　A backlit LCD window displays selections and condition of tone, mixer, keyboard, and rhythm functions. The mixer allows control over each MIDI channel and accompaniment part you choose. Other controls include pitch bend and modulation wheels, together with transpose and tuning.

　　This keyboard operates on D batteries consisted of, or an A/C adapter (Not consisted of).

　　76-note, full-size, touch-sensitive keys.

　　232 tones, 32-note polyphony.

　　2-song, 6-track memory.

　　10 digital results, 130 rhythm patterns.

　　Bass reflex audio system with 4 speakers.

　　Keys: piano, electronic vital board, midi in and out.