SheenRoad Water Bottle Cap USB Portable mini Humidifier Air Diffuser Mist Maker Home White UNIQUE TECHNOLOGY:This Ultrasonic Aroma Essential Oil Diffuser is Wood Grain,Whisper-quiet Operation, Waterless Auto Shut-off, adjustable LED Light,time setting, easy to use/Clean, enjoy High Quality Life ENJOY NATURAL PRIMITVE:Wood Grain Design.The plastic material that looks like wood, this makes it very light weight. The size of it and the wood texture is a nice touch. ADJUSTABLE LED LIGHT: You can choose 7 colors cycling, stop it at the color you want,turn off the light completely TIME SETTING:according to personal preference set 1 hour/3 hours/6 hours/steady on( when the water is finished it will automatically turn off keeping your unit from being damaged.) EASY TO USE: Just remove the top, and pour in your water to fill line. Then add your essential oil. Then enjoy it on bedroom, office, living room, bathroom,conference room, hotel, yoga clubs,fitness center, SPA center, etc.