Philips Air Purifier Series 4000i provides best-in-class air quality. The sleek and minimal silhouette accommodates well-constructed mechanic details. The signature circular hole design gives the user real-time air quality feedback through different colors, while the smart connected app ensures the user is always in control. Premium materials and finishing in light sophisticated metallic colors elevate the desirability of the product and express cleanness and tranquillity. It reliably removes formaldehyde and efficiently lowers harmful gas and particles to safe levels, allowing people to live and breathe in a healthy and safe home.