Enjoy soothing vibrations wherever you go with this wireless black mini "massage". Powered by an almost silent machine, the mini Wanachi massager is one of the best choices to rejuvenate your tired muscles. Choose a speed that is right for you and enjoy the freedom of wireless stimulation. Relaxing vibrations relieve tension and reduce muscle fatigue, giving your aching body the recharge it deserves. It has 18cm length (20cm total) & 3.7cm diameter, is made of silicone and hard PVC and works with 2 AA batteries (not included).