YAMAHA YPT200AD 61-KEY PORTABLE KEYBOARD WITH PORTABLE GRAND FUN Yamaha Education Suite offers 102 built-in songs 7 lesson levels lesson grading and chord dictionary Auto-accompaniment function with 100 styles; 32-note polyphony; built-in metronome and sustain pedal jack Dual 4.7-inch stereo speakers (2.5 watts x 2); measures 37.25 x 4.33 x 13.66 inches (W x H x D); 1-year warranty