Now that I'm working from home full time like many of us, I was concerned about the air quality in my home office. This device helped me to immediately diagnose the issues with my air quality and I've seen the immediate results of taking steps to improve it (cracking open a window when CO2 is too high, getting a humidifier to combat the dry desert climate, etc).The device looks great and the display on the device itself is pretty easy to understand once you get used to what each of the bars means. I also like how the display can be adjusted to show any of the metrics individually or can be used as a simple clock if desired. I also appreciate the light level adjustment and the sleep mode which would come in handy if using the device in a bedroom.Additionally, I've found the mobile software to be top notch. I like being able to track trends over time and see the impact of my actions in graph form. Unlike others here I personally haven't had any issues keeping it connected to WiFi, though I understand that would be frustrating.All in all, if you're spending more time at home lately and are concerned about your air quality, I'd highly recommend this!