The Wahl® Flex Therapy Rechargeable Therapeutic Massager helps relieve pain & fatigue. It has full size power in a compact massager. A 2 hour run time on a complete charge. The Flexible neck conforms to all areas of the body to target concentrated areas. The Kit comes with 7 Home Physical Therapy Attachments that allow you to customize your massage. Interchangeable heads: Deep Muscle, Facial, General, Body, Knuckle & Joint, Muscle, Kneading, Scalp & Spot Attachment.