Super delicious and comfortable neck massage with warmth from HoMedics. Vibrations massage allows your muscles to relax and enjoy life. The Neck massager has calming heat that relieves your tired muscles. Portable and practical - perfect for home, office or on the move. Can be set at 2 speeds. Use with adapter included or 4 x AA batteries (not included)Details:Invigorating Vibration MassageSoothing Heat allows for a relaxing massageIntegrated Control allows you to choose from 2-speeds and soothing heatErgo Comfort Design – Internal wire frame flexes and shapes for a perfect fitPortable and Convenient – vibration massage operates on batteries, or use the included AC adaptor (4 AA not included) for vibration massage and heat together.