Why is the BCOOSS Diffuser Superior to Other Diffusers? 1. Ultra-quiet Fan We upgraded an ultra-quiet fan, you’ll no longer hear the hum of the fan. 2. 500ml large capacity water tank Fill up once, moisturize throughout the night, which is 3-4 times the moisture capacity of ordinary humidifiers 3. Anti-slip Mat 3 anti-slip mat, makes the diffuser stable and safe. 4. Convenient DC Socket Position Upgraded DC socket postion from the bottom to the side of the diffuser, easy to connect power. 5. Soft light seven colors available Both a home fragrance diffuser and a humidifier can also be used as your bedside lamp BCOOSS Aromatherapy machine Ultrasonic home silent air humidifier Q&A Q:Can you use the diffuser without having the lights on? A:Sure, the light and mist function works separately, you can turn off the light by long pressing the LIGHT button about 2 seconds. Q:How long does this diffuser last on continuous use? AWith full 500 ml water, strong mist can last 10 hours, weak mist can last 18 hours. Q:Can I use the diffuser without adding essential oils? A:Yes, the oils are optional, you can use it without oils.It just like a humidifier without the oils. Q:Is it easy to clean? A:Yes, the wide and large water tank is very easy to clean, just add some warm water and diluted vinegar, and lay it aside for 15 minutes, then use a wet cotton swab to clean the middle white disc of the tank.Then wipe with a soft cloth. Q:Is it quiet? I'm a light sleeper. A:The noise level of this diffuser is only 23 dB, the ultra-quiet fan can effectively reduce noise. It won't disturb you at night.