USB Electric RGB Air Diffuser 300ml. This compact device combines an ultrasonic air humidifier, essential oil aromatherapy, cool mist maker, and essential oil diffuser. Enjoy continuous mist output and effective humidification in any space. The USB functionality ensures easy connectivity to laptops, power banks, or USB adapters. Choose from a range of vibrant hues to create a soothing ambiance. The silent operation and automatic shut-off feature provide safety and relaxation. Experience the benefits of our stylish and convenient diffuser today.