The newly FDA 510K cleared Belun Ring by Hong Kong-based Belun Technology Company Ltd is a wearable pulse oximeter ring. Belun Ring BLR-100 is a noninvasive and standalone pulse oximeter, intended for spot-checking of oxygen saturation of arterial hemoglobin (SpO2) and  pulse rate of adult patients through index finger in hospital and home environment. It is not intended for single-use and out-of-hospital transport use. The oximeter is integrated with an app that analyzes user data using artificial intelligence.