This hand-held device gently stimulates millions of nerve endings on the scalp as well as acupressure points that create a feeling of giggly, goose-bumpy sensations. The copper legs stimulate the scalp and promote the release of endorphins, and provide pleasurable feelings while relaxing the person. Use it with or without vibration to create different effects. This unit offers one speed of vibration to choose from. It runs from two AA batteries.