Crane USA Humidifiers - Penguin Adorable Ultrasonic Cool Mist Humidifier - 1 Gallon Adjustable Mist Output, Automatic Shut-Off, Whisper-Quiet Operation, for Home Bedroom Office Kids and Baby Nursery

1 GALLON TANK: Removable 1 gallon tank fits under most bathroom sinks for easy filling and runs whisper quiet up to 24 hours CLEAN CONTROL: Anti-microbial Material reduces mold and bacteria growth by up to 99.96% SOOTHING RELIEF: Ultrasonic Cool Mist effectively humidifies up to 500 square feet for easier breathing and a good night’s sleep NO FILTER REQUIRED: This humidifier does not require a filter, but for homes with hard water, demineralization filters can be purchased and used with this unit AUTO SHUT-OFF SENSOR: Humidifier automatically shuts off when the water level is low