Fangrui Product Details Diffuser Humidifier 2-in-1: By Utilizing Ultrasonic Vaporizer Technology, Breaking Down Water And Essential Oils Into Fine Mist Particles.so It Can Be Used As A Diffuser And Humidifier.plus, The 180ml Water Tank Ensures You Can Enjoy A Constant Mist For Hours Without Having To Refill Frequently! Colorful Flame Effect: The Flame Diffuser Integrate With A Built-in 7 Color Changing Led Light That Collects Light And Mist To Create A Realistic Flame Effect, Adding A Relax, Soothe, Calm Atmosphere To Your Home, Office, Spa Etc. Auto Shut-off: The Fire Diffuser Featuring An Ultra-quiet Operation Mood Of 25db Peaceful Environment To Help Soothe Your Mood, Relieve Stress Improve Your Sleep Quality. And, The Auto Shut Off Function,help The Flame Diffuser To Stop Working Once Lack Of Water, Making It Very Safe And Reliable. Great Gifts And Warm Care: This Diffuser Is A Gift For Your Friends And Family To Keep Them Away From Dry Air And Relax. Some Drops Of Your Favourite Essential Fill The Room With Much Fra