Nano-particle filtration efficiency smaller than 0.003 microns** (800 times smaller than PM2.5) Achieves up to 99.7% filtration, including fine dust particles such as PM2.5 and airborne viruses** Powerful air purification in a compact size with exceptionally quiet operation. Fast clean air with a CADR of 520 m³/h, covering up to 135 square meters. 3-layer filtration system with HEPA and activated carbon, using NanoProtect HEPA technology to capture ultra-fine particles as small as 0.003 microns. The air purifier operates very quietly at just 15 dB, thanks to SilentWings technology. • Captures 99.99% of allergens from dust mites, pollen, pet hair, and mold spores, as well as removing viruses and bacteria from the air. • Connects to the Air+ app to control air quality in real-time via your mobile phone. • The Smart AeraSense automatic air quality sensing system detects and activates the purifier immediately when any change in air quality is detected. • Energy-efficient even when running at high power, comparable to a light bulb. • The air filter lasts up to 1 year