QUIETPURE Home Air Purifier with HEPA Filter Covers up to 1278 Square Feet; Features a Lifetime Warranty Ultra-Quiet Operation; Includes a Pre-filter, HEPA Filter and Activated Carbon in a Single Cartridge Filters Particles 2.5 microns and larger at 99.8% and down to 0.3 microns and greater Beautiful, Contemporay Design; Soft-touch LCD Controls Smart, Auto Operation and Wifi Enabled! Requires a 2.4 GHz router for syncing app with air purifier.