GCZ air purifiers are designed to provide high-quality air with advanced technology and superior performance, creating a healthy space for you and your family. AP302 air purifier is a truly smart WiFi air purifier, you can use APP by matching 2.4 GHz WiFi to control it wherever you are. This WiFi air purifier is also voice controlled, you can also operate your purifier with Alexa or Google Assistant. GCZ air purifiers are equipped with a powerful H13 HEPA filter, 4-stage filtration process, and can effectively capture particles 99.97% of germs, dust, pollen, pet dander, mold, smoke, hair, and odor. Find official replacement filters on Walmart, please click here!