USB Massage Ball gift is powered by USB connector and suitable for computer operating staff. small size, easy to use Item no.:USB-2001AName:USB Massage BallFeatures:-Material:ABS.-Size:6.5*3.7CM.-It is powered by USB connector and suitable for computer .-USB 2.0 .-1.5 meters long USB cable, motor speed of 3600.-You can massage head, arms and legs, waist, shoulders and other parts.