Cleaner, Healthier Air: Our desktop air purifier features 3-stage filtration to remove up to 99.97% of pollutants as small as 0.3 microns in up to 435 Sq. Ft. based on 5 Air Changes per hour Easy to Use: ENERGY STAR certified small air purifier is equipped with touch controls to customize settings such as Low, Medium and High speeds. In Sleep Mode the fan operates at a reduced speed Convenient Features: Our air purifiers for home feature a shut-off timer with 1, 2, 4, and 8-hour options. Child lock helps prevent the settings from being inadvertently changed Replacement Filters Available: Room air purifier features a filter indicator light with audible alarm to alert when the 3-stage HEPA filter needs to be replaced. Each filter lasts up to 2000 hours Compact, Stylish Design: Looks good on any office desk, nightstand, bedside table, or kitchen counter. The pure and clean exterior of our air purifier complements any decorative theme