Main Street Guitars MKB-54 Note Electronic Keyboard, 54 Key Includes AC Power Adapter. Can also be powered with six optional D-Cell batteries 54 Notes/Keys; 10 Tones & Rhythms. 8 Demo Songs Sustain, Vibrato Function and Sync & Fill Functions RCA Outputs. 3.5mm Headphone Jack. 3.5mm microphone Jack Record & Play. Guide A & B. 8 Panel Drums Standard piano keys^100 Tones, 100 rhythms, 8 stereo demo songs and 8 panel drums, sync, fill-in, single chord, finger chord, tone CLR, sustain, vibrato, keyboard Transpose^B/W key record, rhythm program, guide-A and guide-B, 32-level tempo, 16-level volume, 8-level rhythm chord volume^RCA outputs, headphone jack, record/play^Powered by included 12Volt/DC adapter