Most wearable healthcare devices facilitate the continuous monitoring of physiological parameters (e.g., electrocardiography and respiratory rate). However, usability issues still arise in many wearable healthcare devices, leaving end-users dissatisfied with the service. To better understand patients' requirements, usability studies and user-centered design research must be conducted. In our study, we aimed to design a wearable health-tracking prototype that is catered for COVID-19 out-patients, we addressed this issue by including stakeholders in our design process. We investigated patients' needs while also understanding crucial metrics from physicians who worked with COVID-19 patients. From our preliminary research and our findings, we designed a wearable health tracking device and health application interface prototype. Then we conducted usability tests to ensure meeting user requirements and satisfaction. According to our system usability scale (SUS) score and other findings, our prototypes were considered usable and acceptable by users. However, due to COVID-19 restrictions, many limitations were placed.