The Alen BreatheSmart 35i is ideal for bedrooms and other rooms up to 1000 sq. ft. Proven to improve sleep by an independent SleepScore Labs study, the BreatheSmart 35i emits a soothing pink noise that boosts frequencies in the lower octaves, so you wake up feeling rested. Alen air purifiers offer superior performance through the combination of a powerful fan, quiet motor, and advanced filtration technology to deliver and maximize airflow while minimizing noise. Our H13 filters capture particles as small as 0.1 micron, removing even the tiniest pollutants including dust, pollen, pet dander spores and more. Laser sensor technology detects when particles are present and auto-adjusts fan speed, so you don’t have to. The 5 color-coded rings show your indoor air quality at a glance and let you see how Alen is working to clean the air quickly and efficiently. Get real-time air quality insights, view historical trends, or control your purifier remotely using the Alen Air app.