OXYS Model 615 is a true life saver! The OxySure Portable Emergency Oxygen System, Model 615 is a revolutionary product now available in the U.S. and other countries for the first time. It is cleared by the US Food & Drug Administration (FDA) for over the counter sale, NO PRESCRIPTION IS REQUIRED. Model 615 allows a parent, bystander or the victim him/herself to administer lifesaving oxygen in event of a medical emergency, while waiting for first responders to arrive.