Better than expected, especially during the epidemic
Finally got my device today. The app has been updated and the device worked perfectly. I compared the results with other devices and the results are in line (other devices way more expensive than this).
One company, Nexvoo, announced a face mask called Breeze that’s transparent to show off your smile. It has two silent fans that both circulate and filter the air, and a UV light to automatically disinfect the mask while it’s charging.