This is a 61 full size keys teaching piano keyboard for Learner's and beginners. This keyboard is equipped with 255 tones, 255 rhythms, 24 songs, 3 step Lesson, transpose functions, record and play back, sustain/ vibrato, metronome, mic jack, phone and output jack.This is a 61 full size keys teaching piano keyboard for Learner's and beginners. This keyboard is equipped with 255 tones, 255 rhythms, 24 songs, 3 step Lesson, transpose functions, record and play back, sustain/ vibrato, metronome, mic jack, phone and output jack.This is a 61 full size keys teaching piano keyboard for Learner's and beginners. This keyboard is equipped with 255 tones, 255 rhythms, 24 songs, 3 step Lesson, transpose functions, record and play back, sustain/ vibrato, metronome, mic jack, phone and output jack.This is a 61 full size keys teaching piano keyboard for Learner's and beginners. This keyboard is equipped with 255 tones, 255 rhythms, 24 songs, 3 step Lesson, transpose functions, record and play back, sustain/ vibrato, metronome, mic jack, phone and output jack.