Roll piano 61keys with midi (Piano6101)

61 keys rolling-up LED keyboard with MIDI function!    
128 instruments / 100 rhythms        
Record/play: Maximum 366 musical notes      
40 demo songs          
Octave: Have 5 full octaves        
External speaker out/Earphone jack/ DC adapter jack    
Power supply: 4 AA batteries or        
A 6 voltage AC adapter, 1000 mA        
Size: Mainbody: 9.5(L)X 23(W)X 3.6(D) cm      
Keyboard: 89.5(L)X 17.8(W)X 0.6(D) cm      
Packing: Color box          
Box size: 28.8(L)x19.8(W)x8.8(H) cm      
Qty: 24pcs/ Ctn          
G. W. /N. W.: 29.5 KG/27.5 KG