This 61-key standard keyboard is built with various function options: Keyboard Percussion, Master Volume / Accom Volume / Tempo Control, Single Finger / Fingered Chord, Sync / Fill-in, Rhythm Programming Function, Record & Playback, Sustain / Vibrato/One-key / Follow / Ensemble. STANDARD PIANO KEYBOARD WITH 61KEYS AND MP3 PLAYER FUNCTION. Perfect standard 61-Key keyboard for beginners. INCLUDES 255 TIMBRES, 255RHYTHMS AND 50 DEMONSTRATION SONGS. Produces quality sounds and effects. Provides players with colorful and fantastic playing experience. HIGH-QUALITY LED DISPLAY. Multifunctional LED screen. Sensitively reflects functions/effects chosen or guides correct notes to press in demo songs. Helps players better learn and control. MULTIPLE PATTERNS&FUNCTIONS. Keyboard Percussion,With USB Disk Jack / Microphone Jack, Audio Input Jack /