This device soothes pressure points around your head and on the back of the neck, relieving tension and stress without medication. It slips on like a hat and has air bags that expand and contract to relieve constricted blood vessels and soothe soft tissue. Hundreds of small, soft nodules inside the unit vibrate to create the sensation of a gentle fingertip massage, relaxing stiff muscles in the neck and head. Four massage speeds adjust easily using the remote control and users can select a 5-, 10-, or 15-minute cycle. To further encourage relaxation, you can turn on the integrated speakers that play seven soothing nature sounds. Requires four AA batteries or plugs into AC using the included adapter. 9" H x 10" Diam.