The Chill Pill Device Hand Held Ergonomic Sleep Aid Machine Features: Relief and fashion: this Sleep Instrument has a design that fits the human hand grip, simple and light, one button to turn on and adjust the power. Sleep Tool: This sleep aid device mainly helps people with insufficient sleep and poor psychological quality to fall asleep as soon as possible. At the same time, the functions of relieving migraines, relieving anxiety, and releasing stress. Easy to use: This sleep instrument has a long battery life. When using this product, please use your left hand to hold it handheld sleep device, so that your hand and brain can share the same frequency to relieve anxiety. Ergonomic : New frosted texture, in line with the human hand grip design, simple and comfortable. Idea Gift Choice : Using it can help you fall asleep faster and relax completely during sleep, for friends family with sleep problems, this is a good gift. Specification: Type: Instrument for keeping sleep Material: ABS Mode:  Sleep Assist/Inspiration Power supply mode:  USB charging Battery capacity: 500mAh Input voltage: DC 5V/1A Operating power: 0.5w Endurance: 20 hours Recommended use time: 15 minutes How to use: To put the front of the product completely in your hand. Press the power button is low frequency decompression mode, it is recommended to use the left hand. Press the power button again is high frequency encouragement mode, right hand is recommended. Use the +/- keys on both sides to adjust the power Press and hold the power button to turn off the power. Packing list: 1 x Main Unit. 1 x  User Manual. 1  x USB Cable Note: We do not recommend the use of this product for the following people. 1. Patients using implantable electronic devices (such as pacemakers, insulin pumps) should be prohibited from using it. 2. It is strictly prohibited to use it together with high frequency surgical equipment, short wave or microwave therapy equipment. 3. The use of therapeutic electrodes near the chest, while operating complex or dangerous equipment or while driving is strictly prohibited. 4. It is forbidden to use in patients with epilepsy. 5. It should not be used in patients who have had a recent hemorrhagic stroke.