61 keys roll up piano with speaker

1,61 standard keys(include black keys).

2,128 tones,128 rhythms,45 demo songs.

3,Mode selection(rhythm,tone).

4,Single finger,fingered.

5,Single teaching function.

6,LED indication.

7,Tempo control.

8,Record,tone,play function.

9,Demo play.

10,Opp.

11,Tenuto/trill function.

12,With 1100mA rechargable battery inside,usb 2.0 charging station.

13,USB Midi out function.

14,Support external speaker and earphone.