Feature: 1. Reduce Anxiety: Intelligent sleep aid device transmit microcurrent through ear clips to the brain, effectively relieve anxiety, insomnia and depression. 2. Timing Function: Sleep aid instrument with 20 minutes timing, automatic power off after 20 minutes, which will save power and safe to use. 3. 3 Modes: Microcurrent sleep aid with 3 modes to meet various requirements, which is suitable for both teenagers and elderly people. 4. Easy Use: Connect the ear clip electrode cable to the host, wet the ear clip, clip on the earlobes, press the "+", "‑" key to adjust the strength. 5. Adjust Strength: Intelligent sleep aid adopted low frequency pulse and 28 strength levels to adjust, which can effective promote sleeping. Specification: Item Type: Sleep Aid Massager Material: ABS Color: Black Mode: 3 Modes Gear: 28 Gears Battery Type: Lithium Battery(Included) Battery Capacity: 500mah Power Supply: USB Cable. Package List: 1 x Sleep Aid1 x USB Data Cable1 x Ear Clip1 x Manual