The 44-key SA-77 offer all discoverers of music the essentials for playing those first tunes.100 timbres, 50 rhythms and 10 integrated songs provide variety - the LSI sound source and the 8-note polyphony ensure good sound quality. The LC display helps with selecting and calling up the different music options. The SA-77 also includes a striking change-over switch making it easy to switch between the piano and organ modes, while the same feature on the SA-77 enables easy switch. 44 Mini keys 8-note polyphony max. 100 new timbres 50 play-along tracks 5 drums pads 10 practice pieces Melody-off function Headphones Speakers: 2 x 1.2 watts power supply unit or 6 AA-size batteries (both are optional)