Combine traditional therapeutic massage with modern digital tech. Accelerate the blood circulation Relax local muscle and remove fatigue Eliminate inflammation and swelling Alleviate pain and fatigue Four therapeutic modes, vibrate, thump, Shiatsu and Scrape therapy. Different automatic massage programs for your shoulder, waist, back, food and arms. 8 levels of massage intensity for each mode, 8 levels of speed for each mode. Portable electrotherapy device for all the body Battery and AC adapter both are workable and Switch freely LCD screen