About the Otamatone An adorable, quirky instrument whose sound has been described as similar to that of a synthesizer or theremin with a playing style resembling that of a string instrument or Stylophone, the Otamatone creates electronic tones that you can control based on the position of your finger on the touch-sensitive fretboard. Use a switch on the back to choose an octave and slide your fingers up and down to play different notes. Open the Otamatone's mouth with a squeeze to change the sound from a hum to an "ahh" and create a "Wah Wah" effect. A perfect toy for lovers of all things cute, silly, and weird, the Otamatone also makes a great gag gift, and a unique and amusing gift for violinists and other musicians. Size 5" x 14" x 3" Powered by Regular: 3 AAA batteries Includes Instructions + Practice sheet / Test batteries NOTE*** Due to display differences, actual colors may vary slightly from what appears online.