1. 4 Colors: Different lights have different wavelengths, red LED light is 630nm, blue LED light is 460nm, yellow light is 590nm, and near infrared light is 850nm.2. Blue LED Light: LED beauty face device helps to treat oily skin and pimple skin, improve skin properties, balance oil, and make skin smoother. It also works as a collagen mask.3. 240pcs Lamp Chips: Comes with 240pcs evenly distributed LED lamp chips, effectively care for every corner of the skin, so as to achieve the purpose of skin improvement.4. With Eye Cover: Eye protection cover can prevent your eyes from bright light, and you can read, work, or watch TV while wearing the beauty mask.5. Silicone Material: Made of food grade silicone material, which is lightweight and comfortable to wear. You can adjust the length of the band according to your face shape.Specification:Item Type:LEDBeautyFaceDeviceMaterial: Silicone, ABSColor: BlackNumber of Lamp Chips: 240pcsLight Color: redLEDlight, blueLEDlight, yellowLEDlight,infraredlightLight Wavelength:RedLEDlight: 630nmBlueLEDlight: 460nmYellowLEDlight: 590nmNearInfraredLight: 850nmLightWaveGear: 3 GearTimingTime: 10-30 minutesBatteryType:LithiumbatteryBatteryCapacity: 3000mAh (Built in)PowerSupplyMode: USB chargingHow to