Product Features: 1.Two Modes To Choose From:Relaxation mode and activity mode. The sleep aid is placed in your right hand. Hold the device in the palm of your hand so that the electrodes are centered. When you feel tired and need more energy, we recommend using the activity mode. 2.Quick Sleep Aid: This device mainly helps people with lack of sleep and poor psychological quality to help you fall asleep as soon as possible. relieving stress helps to fall asleep quickly to relieve stress and improve sleep quality. 3.Relax Mode: Sleep instrument place the pulse optimum sleep assist in your right hand. Product Specifications. Material: ABS+stainless steel Size: 38.5*40.5*68.5mm net weight: 38g Color/style: white/orange/green Battery capacity: 500mAh Input voltage: DC 5V/1A Working power: 0.5W Charging port: Micro USB Package Included: 1 x Sleep Aid 1 x USB Cable 1 x Chinese and English manual How to use: 1. Put the front of the product completely on the palm of your hand. 2. Turning the top button away from OFF is the low-frequency decompression mode, which is recommended for left-handed use. 3. Pressing M again is the high-frequency encouragement mode, which is recommended for the right hand. 4. Power to the right increases, power to the left decreases. 5. Turn the top button to OFF to shut down. Notes: * Based on the safety of patients, we do not recommend the following people to use this product: 1. Patients who use implanted electronic devices (such as pacemakers, insulin pumps) should use them with caution; 2. It is forbidden to use it with high-frequency equipment, short-wave or microwave treatment equipment; 3. It is forbidden to use therapy electrodes near the chest, or use therapy electrodes when operating complicated and dangerous equipment or driving; 4. It is prohibited to use in patients with epilepsy; 5. Patients with recent hemorrhagic stroke should use it with caution.