essential oil diffuser aromatherapy humidifier: 500ml grain ultrasonic aroma air vaporizer for large room quiet mist humidifiers remote control for small baby bedroom home xcxp this is a humidifier with diffuser with a 500ml water tank, also an aroma diffuser for essential oils, or simply use as a humidifier.<br>it's an 8 - 12 hrs diffuser with 7 soothing colors led light.<br> humidifier and diffuser combo with timer (60min/120min/ 180min/steady on),will auto shut off when time is up or water runs out.<br>ultra-quiet make sure you sleep comfortably.<br><br><b>mist control:</b><br>press the "mist" button for one second, you will hear the sound "di" then choose the timer from 60min/120min/180min/steady on/turn off. press the "high/low" button, you will hear the sound "di di", then you could choose the strong and weak mist mode.<br><b>light control:</b><br>press the "light" button to turn on the led light, the color will change automatically. press the "light" button again to fix the color. press the "light" button again to change color. if you need to turn it off, please long press the "light" button.<br><br>what's in the box: 1 x 500ml essential oil diffuser, 1 x adapter; 1 x measuring cup; 1 x remote control; 1 x user manual(all in the water tank).