Relieve insomnia: This portable sleep aid device uses microcurrent to stimulate cortical neurotransmitters to help people with sleep deprivation and insomnia fall asleep as quickly as possible. It also has the functions of relieving migraines, relieving anxiety, and releasing stress. This sleep aid is lightweight, small, and portable, so it can be used in the office, home, and on business trips. Low-frequency microcurrent: Low-frequency pulse current is microampere level. It does not harm body functions. It still helps sleep after stopping use. It is non-drug and non-dependent. It transmits current through the palm of the hand to avoid the risk of direct stimulation of brain current. Effectiveness: Many people do not feel drowsy because they are not used to using the device as a sleep aid at first. This is because our bodies need some time to adapt to this device. We recommend that people with insomnia continue to use it for more than 1 week to allow their bodies to adapt. You'll find that your sleep will improve as a result. Warning: Do not use it with implantable medical devices such as pacemakers, otherwise it may cause device failure or cause danger. This sleep aid can slowly improve sleep regulation, but it needs to be used continuously for a week. For friends who have sleep problems, a sleep aid is a good gift.