[WARM & COOL MIST] Cool mist humidifier, warm mist humidifier, essential oil diffuser in one. Full humidity helps moisturize the dry air and alleviate the discomfort in your room. The warm mist can provide extra heating in winter while the cool mist keeps your nose and skin hydrated in summer. [DIRECTLY ADD ESSENTIAL OIL] Made of anti-corrosive material, you can add essential oil into the tank directly for pleasant aroma experience and relax your mind. [ADJUSTABLE HUMIDITY] The intelligent humidity system in LED DISPLAY make it more precise and effortless to adjust mist to fit your comfort level. Maintain an cozy humidity level for office, home, living room, bedroom, baby nursery and plants indoor. [BREATH OF FOREST OVERNIGHT] Large capacity 4L water tank allows for more than 24 hours of continuous use in low mist. You can enjoy overnight of cooling atmosphere without trouble of frequent adding water. Whisper-quiet operation and no disturbing light gives you a pleasant and comfortable sleep quality below 40dB. [EASY AND SAFE TO USE] Features top filling design with 8.2 inches large opening and separate power cord, this air humidifier is convenient for daliy cleaning and refill. Safety to use with automatic shut-off and shortage indicator warning when the water runs out. Any of questions will be solved in 24h.