My father was needed a cool mist humidifer for his bedroom to help him sleep. I purchased this for him since this has not only the cool mist humidifer it is also a night light. The light is nice, not realy bright it is a soft light, giving off the perect amount of light. It holds 300ML of water, and you can add essential oils to give off any scent that you choose, I gave him lavender to help with relaxation and calming, which also helps you sleep. This humidifer is very easy to use, simply use the container to fill to the fill line, add a few drop of essential oil if you would like. Place the top back on, push to button and you one. You can choose the have the light or not. This is supplied with a electrical cord that you plug into the home outlet. It runs for a very long while or you can have it shut off. Very pleased with how the mist comes out, and the soft light.

https://www.amazon.com/MIZOO-Ultrasonic-Essential-Humidifier-Adjustable/dp/B01NAJCMX0/ref=cm_cr_arp_d_product_top?ie=UTF8