Welink Flexible Roll Up Piano(61keys)+Built-in Speakers WAMKAI

61 keys (5 octaves; standard performance keyboard size)
128 tones (sound quality is equivalent like a true piano)
128 rhythms
45 demo songs
Upgraded sound engine
Master volume & rhythm control key(has speaker inside)
Recording function
Midi controller/Midi out function(able to write music in computer; supports Mac OS and Windows OS like Garage band,Cubase software)
Rechargeable battery (Lithium battery, charge via adapter provided, also able to be charged with computer.)
Power saving function, will power off automatically once no operation for 3 minutes
Sustain and vibration function
Earphone/Speaker output function
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