Features: brand new and high quality CES micro-current stimulus therapy, reaches the brain through the conveying current of the hand/foot, regulates the pattern of brain activity, and uses physical therapy to treat insomnia, anxiety and depression. Mini and handheld device can directly enable safe and painless physical treatment when you hold it, staying away from drugs, no side effects caused and less patient burden. The sleep aid machines have soft/standard/powerfull 3 mode, assist sleep at night, which can help you for focus on important matters and get the job done efficiently for a day. This sleep aid device mainly helps people with insufficient sleep and poor psychological quality to fall asleep as soon as possible. At the same for time, it only takes 20 minutes to make you more relaxed and has the functions of relieving migraines, relieving anxiety, and releasing stress. When you want to sleep when you are studying and working. Can be adjusted to excitement mode, through instrument stimuli, to achieve excitement, so that you don'for t want to sleep Specifications: Material:ABS Input: 5V-1A Working power: 0.4W Type:Hand/Foot Color:White/Black/Green Size:Approx.8.5x3.5cm/3.34x1.37 inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Sleep Aid Device