Intelligent mode and 3 manual mist speed settings. Be 100% in control of the way you run the humidifier. Theres a built-in humidity sensor that keeps a healthy humidity level at home. Additionally, the top-fill humidifier has 3 manual settings to switch between low, medium, and high output speed. Cleaning and refilling is a breeze. The humidifier is quick and easy to run. It takes only a couple of minutes to refill the unit - just pour the water directly into the water tank without removing the cap! Thanks to a transparent water gauge, you will be able to estimate how much time is left to the next refill. Geniani 2-in-1 Humidifier & Diffuser. Moisturizing the room with cool mist significantly improves sleep quality, skin condition, and work productivity. With a built-in diffuser, you will also be enjoying revitalizing scents of essential oils in the air. Geniani humidifiers with essential oils help relaxafter a busy workday. Fill your home with fresh and clean air thanks to the New Ultrasonic Humidifier! Fresh air is crucial for having a healthy and productive lifestyle. If you want to find a humidifier that is easy to use, has a sleek design, and runs smoothly, this one is for you. Key features: 4L top-fill water tank that lasts up to 18 hours 2-in-1: a humidifier works as an essential oil diffuser Intelligent mode with a built-in humidity sensor Large space coverage up to 220 sq. ft. LED Night Light with a turn-off option Auto shut-off Runs all day long. The humidifier has a large tank capacity (4L of water) that can moisturize a large room for over 18 hours on the highest speed mode and up to 24 hours at a low-speed mode. Ultrasonically quiet. The geniani 4L humidifier runs noiselessly. You will be able to place it next to the bed.