TaoTronics Humidifiers, 4L Cool Mist Ultrasonic Humidifier for Bedroom Home Large Room Baby Room, Quiet Operation, LED Display with Humidistat, Waterless Auto Shut-off (1.06 Gallon, US 110V)

* Quiet Operation for Bedroom Use: Ultrasonic humidifiers are incredibly silent, produces less than 38 dB of noise; perfect for your baby and a disturbance-free sleep at night * 4L Tank Capacity, Works for All Night: Over a gallon of water lasts for 12-30 hour working time on a full tank; designed to humidify the air in rooms up to 10-30 m² / 107-322 ft², bedroom, nursery, office and so on * Informative LED display: Built-in Humidistat tells you the current RH; Easily choose between three mist levels; Set your desired humidity level, 40-60% is recommended * Nightlight & Sleep Mode: Choose to turn on the nightlight, or enter sleep mode to shut off LED screen for a discreet sleep at night * Safe to Use: Automatically shuts off when water runs out; Microporous cartridge filters the water from micro-organisms and bad odor, we recommend you change filters every 4-6 months * Please do NOT use with essential oils, which will damage the machine and cause leakage problem.