Bright Beats Junior BeatBo has bright lights and fun music to stimulate visual and auditory senses. He has been switch adapted to accept a standard 3.5mm switch (sold separately). Press and release your switch (or push BeatBo's head) to start the music and lights. Press it again to hear the next song. Uses 2 AAA batteries (included). Measuring just 6.5" tall x 4" wide, this toy is a great portable take along! Recommended age 9 months +.