They first announced seeking FDA approval on the UBand back in 2019 and predicted it would happen in 2H2019. Now we are in 2022 and the UBand is still a pipe dream and they are talking about seeking FDA approval for the KnowU by EOY and begin manufacturing within 2 years.
In a similar vein they wasted alot of resources developing and testing the Particle bulb which was supposed to be marketed last summer. That is still on the shelf, awaiting a marketing partner... talk about how long device approval takes is irrelevant, this company has a history of failing to deliver.