Flexible and Transparent Bracelet (IMAGE) ICFO-The Institute of Photonic Sciences Caption Flexible and transparent bracelet that uses graphene to measure heart rate, respiration rate and blood pulse oxygenation continuously. Credit ICFO Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.