This purifier has a built in Ionizer that converts Positive ions into negative ions to promote wellness. The LED feature on the Crystal Aire Purifiers have alternating lights of blue and green which add a tranquil quality to the atmosphere. All the Crystal Aire Purifiers assist in the elimination of bacteria, pet and tobacco odours and revitalisation of the air. They also prevent mould and fungi growth, removal of pollen and dust from the air and the reduction of the effects of paint fumes. They work well for Adults and children for chest decongestion, they are good for Asthmatics, helping with seasonal allergies, moistening the air and helping with dry coughs. It is ideal for homes, offices, medical rooms and hotels. Features: - All the Crystal Aire Purifiers assist in the elimination of bacteria - Also prevent mould and fungi growth, removal of pollen and dust from the air and the reduction of the effects of paint fumes Specifications: - Dimensions: 20cm x 20cm x 20cm - Weight: 0.05kg - Warranty: 12 Months What's in the box 1 x AP001LEDION diffuser 1 x instruction manual