Scope of application- students, piano beginners, professional players, all kinds of music lovers Selling points-- ABS black and white buttons feel comfortable and smooth, do not hurt your hands, quality assurance, excellent workmanship, accordion exclusive bag No power required just blow to play music Parents who want to train their children to learn piano, this tone piano can be used as a starting instrument Cultivate children' s hand- eye coordination, increase lung capacity, and help swimming