Dual Air Intake: MR5866 air purifier greatly improves the purification speed compared with traditional single air inlet design. It has a CADR of 200 CFM/340 m 3/ h and can purify the air of a 1690 ft² space once, which helps quickly reduce air pollution and refresh your breath. This air purifier is perfect for home with large room Smart App Control: MR5866 smart air purifiers support remote operating, Connect your smart air purifier to 'Havaworks' app for features such as power on/off, custom/sleep mode, timer, fan speed, and filter change reminders , which makes air cleaning a more easy routine in our daily life. Add a button that can turn off the light separately in the APP, and adjust the air purifier to 2-3 speed at night without affecting sleep Voice Control: The MR5866 smart air purifiers is compatible with Amazon Alexa and Google Assistant, so you can use your air purifier without having to lift a finger