Meet Circular Ring 2: A smart ring that may track your blood pressure and glucose levels
Circular's Ring 2, a new smart ring, is changing the fitness tracking game with its advanced blood pressure and glucose trend monitoring. It uses PTT and PPG sensors to track how diet, exercise, and sleep affect glucose levels, but it is not a medical device. The Ring 2 is currently available for pre-order on Kickstarter for $239, with no subscription required.