This electronic Kit is a complete Piano featuring 15 white and 10 black buttons with a half-scale play (2 octaves). The Piano can save melodies that have been played and a LED blinks accordingly to the performance. The melodies are arrangeable to your favorite music. 8 kind of tones are also prepared. Furthermore, 15 melodies are pre-installed for using it as a music box.   The Piano is powered by three AA alkaline batteries (not included) and is about 160 x 125mm small. China supplier: Email : fangzhengcn@hotmail.com Skype ID : chanceller819