... can eliminate pain and relieve muscle strain and fatigue in the neck, back, waist, leg, ankle, ankle and feet. ect. ... Another,through the moving of the muscles,it helps to promote the circulation of blood and metabolism and burn the fat, so as to ... as scraping, tapping, kneading, rub, vibration, manipulation, one can feel the most relaxation;3. Built-in mini aviation button lithium battery ...