The Hela Bio smartwatch is not only a fitness tracker but a smartwatch that can measure blood glucose levels, blood pressure and heart rates. The smartwatch has gained over US$200,000 in crowdfunding, but some things do not add up.
https://www.notebookcheck.net/Hela-Bio-A-smartwatch-that-promises-blood-glucose-measurements-blood-pressure-tracking-and-more.499915.0.html