"(Only white/green random delivery) The air purifier helps you to block bacteria, no need to replace the filter element, just USB charging and you can use it! This portable air purifier has the CE-ROHS and EMC certification of the European Union. The product is safe and can be used with confidence. Moreover, the personalized accessory air purifier is ultra-small in size, but the effect is still super strong. It has a full purification range of one cubic meter and is convenient. Whether it is a child or an elderly person, it can be used with confidence. In addition to sterilization, it can also purify the ambient air such as second-hand smoke and pollen! Take it with you to breathe fresh air! The effect of personal use is very good, Personal small-scale space is very suitable for use when going out on the street! Negative ion effect: Create active oxygen. Negative oxygen ions can effectively activate oxygen molecules in the air, making them more active and more easi