This product is manufactured and developed upon the human health; microcomputer controlled 9 vibration programs with 5 strong anti-interference magnetic vibration motors. Vibration massage nerve system, acupuncture points and muscles for human shoulders, back, waist, and thighs. Particular 揙rientation? 揟imer?and 揝trength?functions enhance blood circulation; improve metabolism, relief muscle pain and fatigue. It抯 suitable for home and car, artstic appearance, low power consumption, safety and reliable, an ideal family choice to improve health. Car cigarette lighter plug is available.