Hand brain simultaneous relaxation, CES transcranial micro current can enhance the brain APHA wave, increase the secretion of neurotransmitters, pure physical effect to help fast sleep, get more healthy and quality sleep. Gently hold the sleeping aid and output the CES transcranial micro current, which is transmitted to the brain through Laogong point in the palm of the hand to produce sedative and relaxing effect and sleep healthily. In order to prevent the interaction between the current output and the home when the instrument falls during deep sleep, an intelligent induction system is preset to monitor the contact state between the sleeping aid and the human skin in real time. After 30 seconds of disconnection, the instrument will automatically shut down, making it more comfortable in sleep. usage method Key point 1: switch the sleep aid mode or boost mode at the bottom Point 2: the convex part of the electrode is facing the palm of the hand, and the palm touches the periphery of the convex electrode to form a micro current circuit Point 3: turn on the side knob and gradually adjust to the comfortable gear. Specifications: Color: white, yellow, blue Gear: second gear Style: hand held Power mode: USB Control mode: Mechanical Function: reduce pressure and relieve fatigue Package Included: 1 or 2 or 3PcsxSleep aid Notes: 1-2cm error might exist due to manual measurements, please kindly understand. The colors deviation might differ due to different monitor settings. We provide you with the best product and service. If you have any problem, please let us know, and we will solve the problem ASAP. Thank you so much.