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The active oxygen constantly rejuvenates the zeolite filter, ensuring long lasting superior performance. Always • Smart air control measures and controls air quality • Boost-power cleans quickly at high speed Fresh air • 6-stage Clean air system for clean and fresh air • 3-stage Electro-clean system charges and traps all particles • Active oxygen sterilizes pollutants and rejuvenuates filter • 2-stage Fresh air system removes gases and odours PHILIPS sense and simplicity Bedroom air p