HealthyPi Move: Open source, smart health watch that is as good as professional ones

HealthyPi Move is an open source biometric monitor in the form of a watch. It supports continuous or intermittent monitoring of important biometric signals such as ECG, heart rate, HRV, PPG, SpO₂, blood pressure trends, and respiration. HealthyPi Move aims to be an innovative and customizable platform that enables users to integrate health tracking into their projects and personal health habits. HealthyPi Move is a combination of daily use and advanced research applications. HealthyPi Move was designed according to the same principles as the larger HealthyPi products: open hardware, open source software, clinical-grade accuracy, ease of use, and standalone operation without reliance on cloud services or paid subscriptions. Move can be used for a variety of applications, including personal health tracking, development of healthcare-related devices, and even clinical research - with Institutional Review Board (IRB) approval. If you have the resources to get your device through the FDA (or equivalent) certification and approval process, you can also use it for medical patient monitoring, and it already supports most of the features you need.