21 inch 61 keys LED electronic keyboard. 6 demo , 16 tones and 10 rhythms. 8 tone/drum combination percussions and 2 lesson mode. 1 prog button for program mode, then press drum button to record. 1 record button for recording sound of keyboard. 1 S.E/play button for playing recorded sound of drums and keyboard, and switching 3 . 1 fill-in button to insert a transition rhythm. 1 single button and 1 finger button for chord mode. 2 tempo buttons to fast and slow the tempo. 2 volume buttons to up and down the keyboard volume. 1 speaker offering loud, clear and melodious sound. 1 installable microphone connecting with keyboard and sound out from speakers. 2 grooves on the back of keyboard for storing 6VDC adapter and microphone conveniently. Power Supply:6VDC Adapter or 4 * 1.5V AA Battery (not included) Item Size: . 53.5 * 17 * 5.5cm / 21 * 6.7 * 2.2in Item Weight: 644g / 22.7oz colour:Silver Material:Plastic Package Contents: 1 * Electronic Piano 1 * Microphone Toy 1 * 6VDC Adapter 1 * User Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.