【High Efficiency HEPA Filter】HEPA filter material, the negative ion concentration is 15 million/cm, and the purification efficiency is 50-80m³/h. It can effectively remove smoke, haze, pollen, pet hair, peculiar smells, etc. in the air and provide a comfortable environment. 【Portable Design】It is applicable to almost all indoor spaces. The power supply is via a USB socket and a 1 meter long USB cable is included. It can work by simply plugging in the power supply. The product design is light and small, more convenient than traditional household air purifiers, with low voltage and low power consumption, and greater safety in use. 【Quiet and with night light】The noise level in the workplace is 35 dB, which will not disturb your sleep. There is purple ambient light inside, the brightness is appropriate, and it is easier to accompany you to sleep. 【Wide application】 The applicable area of the air purifier is 11-20 square meters, suitable for small rooms, small work areas and parking lots.