1. Extendable & Contractive Footrest, 2. Wavelike Air Pressure Massage, 3. Various Colors available, 4. CE, RoHS. Basic Functions: 1. The specialty of it is the detailed massage on buttocks, waist, legs and feet. There is a tiny controller on the left side of the sofa, from where all functions are clearly marked, including air pressure (weak, medium and strong), auto, buttocks, waist, leg and ...