Easy to play: Include 37 keys plus volume and tempo buttons to adjust volume and speed. Musical instruments: Get a children's electronic keyboard toy. Two designs: Choose between #3737 and #3739. Compact design: Mini sized so it's lightweight and easy to store. Demos: 24 demos means lots of fun for your little rock stars! Effects: With two sound effects: electronic organ tone and tremolo. Kids' Mini Keyboard | Living Social