A fun way to activate devices. Press anywhere on the switch (and the lightest touch is enough) and see lights, spinning glitter and hear music (twinkle twinkle little star) while activating your device. It also vibrates. It can also be used alone as a sensory toy. Requires 4 x AA batteries. Small white rocker switches on the base enable you to choose to have lights only, music only, vibration only, all three or any combination. See also SW24