[5L Large Capacity Humidifier]: The large capacity allows up to 35 hours of humidification. The cool mist humidifier helps relieve symptoms such as stuffy nose, dry skin, and cough. [Top Filling, Bottom Essential Oil Cartridge]: 14.7CM opening for easy filling and cleaning. The essential oil box at the bottom can add your favorite aromatherapy and enjoy a pleasant aromatic experience. [Note: Please do not add essential oils to the water tank] [As Low as 28dB, 360° Rotating Nozzle]: The humidifier reduces noise levels to 28dB and uses a stepless adjustment knob to control the mist for quiet and versatile humidification. [Auto-Off Protection]: When the water runs out, it will automatically stop working and the insufficient indicator will light up in red to warn and protect the machine for a longer service life. Cool Mist Humidifier Humidifiers for bedroom, large room, office and baby room, humidify the air with a noise level no more than 28dB, creating a comfortable environment for your