Back massager Or backrest massager from the company Scholl #new 12 volts Works by electricity Three-pin plug input And a car input via the lighter Basic product specifications shown on the box: Vibration Massage: It has 3 levels or zones for body massage via vibration. Soothing Heat: Provides a built-in heating function to help relax tense muscles and relieve pain. Portable: Designed to fit home use on chairs or for use in the car while driving long distances. 12V Operation: Comes with a dedicated socket (car lighter) to work easily on the go.