All-in-1 Bluetooth earbud allowing wearers to make calls, attend online seminars privately while being able to detect the wearer’s physiological information, including fever, fatigue, and shortness of breath (3 prevalent early COVID-19 symptoms). It can continuously transmit data to backend servers, thus allowing corporations to detect potential COVID-19 risks for early segregation in the workplace and have better management of employees’ well-being. It also ensures consumers’ peace of mind when they engage in food delivery or shared rides by providing physiological data of service providers.