I’m selling two Levoit Core 600S smart air purifiers that I bought about a month ago. They’re practically new and in flawless condition. I used them lightly at home and kept them well maintained. Both units still have warranty remaining and show excellent filter life (one example shows 96%). They connect to the Levoit app for filter monitoring and replacement instructions, and are simple to set up and operate. I’m including the original filters currently installed; replacement is straightforward via the app guidance.