Type Kneading Working Principle Mechanical Operation Mode Electric Color Black Size Foot and Calf Material premium ABS Warranty 1 year PATENTED FIGURE-8 TECHNOLOGY. Completely surrounds the feet and calves to deliver a fluid, highly effect massage that emulates the expert hands and techniques of highly trained massage therapists STIMULATING UNDER-FOOT REFLEXOLOGY ROLLERS. Powerful rollers just under the feet provide a robust massage to relieve soles and heels ERGONOMIC STYLING. Enhanced tilt angle perfectly matches the body's ergonomics for maximum comfort. The sleek, modern, and compact unit has been stylishly designed to provide superior and effective relief at home or work. Has 5 Different Modes - Auto Mode , feet mode , shock mode , leg mode and heat function for heating sensation in your foot Adjustable tilt base for perfect angle alignment with a favorite chair or sofa