Cordless: Lithium ion technology allows 200 minutes run time. Wahl: Get a cordless deep tissue percussion massager. Includes: Comes with five interchangeable attachments. Multiple settings: with up to 3000 pulses per minute for comforting deep tissue penetration. Comfortable: Ergonomically designed with a rubberised grip and long handle. Multiple use: Suitable for calves, feet, hamstrings, back, neck and shoulders. Deep Tissue Cordless Massager | Living Social