USB eye protection:This product is made of carbon fiber bodyheating element, no burning, produces far infrared ray, good forhealth care, infrared heating body arising from 5 μ m to 15 μ m farinfrared radiation ( This wavelength is necessary to human body andall living things) it is much easier to produce resonance onpeople''s skin and tissue which will penetrate into the skin andsubcutaneous tissue depths, resulting in the warm effect, improveblood circulation, expanding capillary, eliminate microcirculationdisorder. If you use it for longer time, it will help youinvigorate the circulation of blood,  dredge meridians andenhance metabolism, so that it can maintain the skin surface dryand anti-moisture.
Feature:Operating voltage: 5VThe frequency of power: Closed to100%Temperature range: 30-60 degreesHeating time:  It willreach the rated temperature in 3 minutes.Low power consumption,high security and energy conservation.It can improve bloodcirculation around the eyes, to expand capillary, eliminate eyefatigue. If you use eyes too much on computer, which leads to eyefatigue and impaired vision. Keep using it 10-30 minutes every day,it will bring you better effect.It helps sleep. To the people whoare under a lot pressure, as long as you wear it when you sleep andadjust the temperature to the proper temperature which makes youreyes feel warm and comfortable, it will help you sleep in fewminutes.It can be washed, safety, low voltage, no spark.