[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. [Two Modes] Two available operating modes, low-frequency decompression mode and high-frequency excitation mode. The low-frequency decompression mode is recommended for the left hand, which is suitable for those with anxiety and insomnia. The high-frequency excitation mode is recommended for the right hand, which is suitable for refreshing people when they are sleepy. Colour:A:White Material:ABS Package Contents: 1 * Pulse Handheld Sleep Aid 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.