[Quick sleep aid] This sleeping aid machine mainly helps people who have insufficient sleep and poor psychological quality to fall asleep as soon as possible. It stimulating neurotransmitters in the cerebral through micro-current, reduce your anxiety and help you to sleep soundly. It can help you fall asleep quickly or concentrate through brain waves instead of sound. That's a good helper if you have trouble falling asleep and waking up. [Physical Harmony & No ] The sleep aid device applies CES technology stimulation wave to increase endorphin secretion. from sleep pills, insomnia easily and painlessly through physical therapy. It stimulate acupuncture points, promote relaxation and release pressure, and improve your sleeping quality. [Portable & Safe] This machine is extremely light weight and easy to carry on a business trip or journey. for your friends and family who suffer from sleeping problem. Colour:A:Black Material:ABS+stainless steel Package Contents: 1 * Intelligent Sleep Device Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.