AIRMEGA 300S The Smarter App Enabled Air Purifier (Covers 1256 sq. ft.), Compatible with Alexa Smart mode (auto-speed, Eco) App. Enabled for iOS, android (speed control, indoor air quality monitor and report, outdoor air quality monitor, filter life-time monitor, scheduler, etc.) Real time air quality Monitoring system Filter Life time indicator. Filter : Washable pre-filter + Max2 filter set (Activated carbon + Green True HEPA) Room coverage: up to 1,256 Sq. Ft Works with Amazon Alexa