The Silentnight Air Purifier will provide you a great night sleep. This is a triple filtered Air Purifier. It is capable of removing at least 99% of all airbourne contaminants from the air including pollen, mould spores dander and even odours. Removes 99% of all airbourne particles including odours. Silent operation for a relaxing and quiet environment. The Air Purifier can be set to run on a timer setting or a sleep function which cuts out during the night once you are asleep. Product Dimensions: Approx. 34.6 x 21.2 x 20.4cm. Power usage: 28 watts.