Ultrasonic humidifier silently infuses your room with clean moisturized air, so you can enjoy a clean, crisp and odorless air around youHumidifier for baby includes an extra fine ceramic filter to remove harmful bacteria and bad odorClassic control knob adjusts the amount of mist flow nice and easy; the humidifier shuts off automatically when detects low water with a warning red LED indicatorLarge 3.5 L / 0.92 gal. water tank means you get up to 10 hours of continuous mist without refilling, ideal for home and office use