This is a ultrasonic aroma diffuser, which is also a humidifier. Its purpose is to improve air quality and diffuse essential oil fragrances into the air. Description An ultrasonic aroma diffuser is a device that uses ultrasonic vibrations to create a fine mist of water and essential oils, which is then dispersed into the air. The diffuser in the image has a wood-grain finish and a minimalistic design. It is powered by a USB cable and comes with a remote control. Many similar devices also include features like LED lighting and an automatic shut-off function when the water tank is empty. Purpose The main purposes of an ultrasonic aroma diffuser are: Aromatherapy: It disperses essential oils, filling the room with a soothing fragrance that can help with relaxation, focus, or creating a pleasant ambiance. Humidification: It adds moisture to the air, which can help alleviate dryness in the lungs, nose, and lips, especially in dry conditions or when using central heating. Air purification: The mist can help to purify the air by dispersing molecules that kill bacteria.