Features: It can help you fall asleep quickly, relax your brain, improve your disordered sleep habits, and increase blood circulation through hot compress, care for your eye health. USB universal interface is more portable to use, support to connect phone charger, charging bank, car charger and computer, convenient and practical. Adjustable belt makes it suitable for different size of head circumference. 3 modes temperature regulation and time setting, automatic shut down after 4 hours. Concave design bypasses bridge of the nose without pressing. Specification: Condition: Brand New Color: Gray Click the gold switch once: Turn on thermostat mode: Red light high temperature display: about 45 to 50 degrees Pink light medium temperature display: about 40 to 45 degrees Blue light low temperature display: about 37-40 degrees Click the gold switch twice: Turn on timer mode: Quick flashing of lights: 20 minute timer Lights flickered slowly: 60 minute timer User forgets to time: Automatic shutdown for 4 hours Package List: 1 x Eye Mask 1 x USB Cable 1 x Manual 1、It can help you fall asleep quickly, relax your brain, improve your disordered sleep habits, and increase blood circulation through hot compress, care for your eye health. 2、USB universal interface is more portable to use, support to connect phone charger, charging bank, car charger and computer, convenient and practical. 3、Adjustable belt makes it suitable for different size of head circumference. 4、3 modes temperature regulation and time setting, automatic shut down after 4 hours. 5、Concave design bypasses bridge of the nose without pressing.