4 Reviews ← exclude selected types ← exclude selected tagsFirst off: We are neither alleging fraud nor making outright accusations at this stage, but we strongly advise the utmost caution regarding the ongoing crowdfunding campaign for the Ring One Gen 2. The Ring One 2.0 is claimed to directly measure blood pressure at the finger—rather than merely estimating it—and to do so without any prior calibration. While optical blood pressure tracking concepts do exist, such a major technological breakthrough by a relatively small company seems highly improbable. Compounding the issue, the campaign's FAQ page makes no mention of blood pressure measurement whatsoever, presenting a glaring inconsistency. What remains undisputed is that shipping for the original Ring One suffered severe delays, with some backers claiming they never received their devices at all.