The technology used in the Beurer BM-20, to measure blood pressure, has passed in a validation study, in a general population, according to a recognised standard protocol, as published in a peer-reviewed publication.
*** Claim not defined *** It is recommended by the ESH for self-measurement.
Tholl U, Lüders S, Bramlage P, Dechend R, Eckert S, Mengden T, Nürnberger J, Sanner B, Anlauf M. The German Hypertension League (Deutsche Hochdruckliga) Quality Seal Protocol for blood pressure-measuring devices: 15-year experience and results from 105 devices for home blood pressure control. Blood Press Monit. 2016 Aug;22(4):197-205. doi: 10.1097/MBP.0000000000000186. PMID: 26998590.
DHL:1999 - Pass General population (Note: 2004)