Sixty-one full-size keys built to a 1:1 ratio with an acoustic action give this white folding board a realistic reach in a shorter span. Touch response runs through 7 intensity levels, and the Split button opens or closes dual keyboard mode for two players. Dual speakers carry 128 tones, 128 rhythms and 80 songs, with chord, transpose, metronome and keyboard drum functions plus record and playback. MIDI connection opens the board to apps such as GarageBand and Perfect Piano, while rear jacks accept a sustain pedal, headphones, a microphone and power. Folded it drops from 37 inches to 19 inches and weighs 7 pounds, and 4 AA batteries can replace mains power away from an outlet. Batteries are not included.