... compact, attractive design, take no space. Indoor Negative Ionizer with Filter Installation: Plug in the power socket, If the LED light ... properly. Features:1. Use advanced ionic air movement technology, remove odor and dust, kill bacteria. 2. Cordless plug, compact, attractive design, ... air such as dust, pollen, fuzz and fungal spores. There is no need to replace filter material at all. To clean the ...