Xinyan Vibration Body Massager For Multi Usage - XY-999Usage: 1. This massager can be used with 3pcs AAA batteries or usb cable. 2. Whether sitting, standing or lying down all can use it freely. 3. Put the batteries in, then touch the power switch on the top of it. Put it on where you want to massage. 4. Massage can be a press machine to enhance the massage strength, also can be in the position to walk back and forth massage massage. 5. Portable size, easy to carry,it is the necessary health care product