Blueair Signature Blue 4.0 Replacement Filter Large, HEPA Filter Particle + Carbon + OdorFence, Genuine Replacement for Blue 4.0 Series, Removes 99.97% of Airborne Particles, 6-12 months usage E500 the two built-in HD microphone

the two built-in HD microphone is capable of capturing your voice and removing the ambient noise intelligently

get the faster connection

5W of wireless charging power to your device without cables or a need to connect to a power source

9" (2018/2020) GraphicPaper - Screen Protection Best for Drawing/Sketching/Designing/Illustration

25-inch thickness

Blueair Signature Blue 4.0 Replacement Filter Large, HEPA Filter Particle + Carbon + OdorFence, Genuine Replacement for Blue 4.0 Series, Removes 99.97% of Airborne Particles, 6-12 months usage E500 the two built-in HD microphoneThe Blue 4. 0 Signature Replacement Filter is our most advanced HEPA filtration system yet. Powered by OdorFence molecular neutralization technology, it outperforms traditional carbon filters in eliminating stubborn odors. Combining HEPASilent technology with OdorFence, this filter features a 7 stage purification process integrated into three high performance layers: a fabric pre filter, a multi layer filter media, and an enhanced carbon filter. What