Make giant music play the xylophone accordion or the guitar on this gigantic piano playmat with real musical keys you can play your own musical tunes there are 4 modes to select and up to 8 different instruments to play on the mat children will love to make up tunes and play on this huge piano mat the mat size is approximately 71 x 29 and features adjustable volume and automatic power off systemrequires 4 x aa batteries not included