Upgrade Mini Air Purifier USB Tabletop Car Negative ion Sterilization for Smoke

Purification Space: ≤ 108 ft (10㎡). 1 Air Purifier. Purification Filter: 3-in-1 composite filter. Negative ions: 12 million negative ions, two-way negative ion output;. 1 USB Cable. Way of air inlet and outlet: air inlet at the bottom, air outlet on both sides.