Air purifier protects against pollen, viruses, bacteria and tiny dust particles for healthy air and well-being. Suitable for rooms from 21 m² to 65 m². App and voice control. Triple activated charcoal filter: - Pre-filter for removing e.g. house dust and pet hair from room air - Hepa filter for removing viruses, bacteria, fine dust and pollen - Activated charcoal filter also removes odours and emissions The air sensor analyses the room air and automatically adjusts the fan speed to eliminate particles Dimensions (W x H x D): 244 x 544 x 244 mm Display: Filter change Air purification rate: approx. 250 m³/h Noise level: 30 - 40 dB Compatibility: works with Amazon Alexa, Google Assistant, Amazon Echo Show and Google Nest Hub, iOS and Android System requirements: Operating system: Android 4.4 and iOS 8.0 or later