4 Time Modes - 1H/2H/3H/On. The diffuser will stop working when it reaches the time setting.</br>Ultrasonic Humidifier - Humidify your living space to prevent dry?? stuffy air and germs by adding water molecule in dry days.</br>Aroma Diffuser - Send fragrance into the environment wherever you are in working or leisure with your favourite essential oils.</br>Safe Operation - It will automatically shut off when the unit tilts or there is little water inside to keep safe if you are out or in sleep.</br>Adjustable LED Lights - You can choose among 7 col