Features:-It uses HEPA filter, which can filter large dust particles and absorb pollutants such as formaldehyde, toluene, ammonia, PM2.5, etc.-It has 2520 air intake holes throughout the body to absorb pollutants in all directions, and it is equipped with aromatherapy sheet to emit fresh air through the top air outlet.-It has blue light antibacterial function to reduce the occurrence of influenza and protect sensitive people such as children, the elderly, and pregnant women.-It uses USB power supply and can be connected to power adapters, computers, cars and other interfaces for use.-The noise is only 25dB, which will not disturb rest, study, work, and create a quiet environment.Specification:Colour: whiteMaterial: ABSPower: 5WSize: 19*12cmPower supply: USB .