Keyboard with 49 Standard Keys. Custom Multi-Functional LCD. 132 Voices including 4 Drum Kits. 100 Excellent Quality Automatic Accompaniments. Lesson Mode for Beginners. Record Function. USB/MIDI FunctionPower Supply: 9Vdc or 6 x C Batteries Dimensions: 795 x 315 x 120mm Weight: 3.6Kg. The Medeli MC49A is an entry level keyboard with 49 full size keys and offers excellent value for money. It is very suitable for those who are starting to play whether that be a child or adult. The keyboard offers several important features such as 100 automatic accompaniments- with a sustain effect that can be used for specific sounds like organ or piano. In addition- this keyboard offers a one-touch function that selects the best combination of automatic accompaniment and sound- so you do not have to look far for the best sound.. electronic keyboard-keyboard