Our 54 Key Electronic Keyboard features 100 timbres 100 rhythms 32 tempos 6 percussion instruments effects such as vibrato and echo 6 demo songs and more. Also includes microphone and 2 speakers for fantastic sing along. It requires 6 “D” batteries or use included AC adapter. Keyboard size is about 35.5 in. and weighs 8 lbs. For ages 5 and up.