Features: 【Micro-current Mode】There are 3 modes(sleep mode/ massage mode/ invigorating mode) under micro-current mode, and each mode has 6 levels of adjustable current intensity and will be automatically turned off after 20 minutes. Micro-current stimulation, accelerate deep sleep, physical therapy, no side effects. 【Light Breathing & Vibration Mode】The light breathing mode has 3 light colors(red/ blue/orange) and the default time is 30min to shut down. The vibration mode is breathing vibration and it will shut down after 30 minutes. And the breathing light and vibration can work together. 【Proper Stimulation of the Hand by Micro-current】Apply low-frequency electrical pulse stimulation to the palm, from the nervous system of the hand to the brain stem to achieve the same frequency of the hand and brain. Neurotransmitters have positive effects, making the body more calm and relaxed. 【Vibration Sleep Aid】Set the rhythm of the vibration according to the rhythm of breathing. The handheld sleep instrument turns on the vibration and can massage the palm. Assist in dredging meridians and increase blood circulation. Aid sleep and relax body and mind. 【Other Features】Built-in battery that can be charged via type-c interface using laptop/power bank/ USB power adapter; 304 stainless steel electrode sheet, cute and comfortable; mini size and lightweight, easy to hold in hand. Specifications: Power: 0.5W Input Current: DC5V/0.5A Battery Capacity: 300mAh Charging Time: 1.5H Item Size: 5.5 * 4.1 * 2.7cm/ 2.2 * 1.6 * 1.1in Item Weight: 29g/ 1oz Packing List: 1 * Sleep Machine 1 * Charging Cable