37 keys battery powered baby piano with microphone and stool This Baby Keyboard Comes with Education Model: Children can learn to play with the help of indicator light on the keyboard Its ability to play 4 different instruments and 4 different rhythms; This toy piano comes with 22 demo songs This toy musical keyboards can be connected with MP3 device or USB flash disk to play music and connected with earphone to listen music Piano Size: 53.5L x 27W x 63H (cm); Certificated by EN71,7P,EN62115; Requires 4 AA batteries (not included); Easy to assemble, Manufacturer: Sold by MHSTAR