Hypertension represents a significant health risk, potentially leading to serious complications, making it a primary cause of death around the world. Continuous blood pressure (BP) monitoring is considered essential for ensuring reliable diagnosis. However, invasive methods, even though a gold standard for BP monitoring, can lead to serious complications. Non-invasive techniques are commonly used but cannot monitor BP continuously. In this context, it is crucial to develop a non-invasive, safe, and comfortable method for continuous BP monitoring during daily activities. Alternatively, photoplethysmography (PPG), a portable optical sensor that continuously detects volumetric changes in blood circulation, offers a promising solution for non-invasive and continuous BP monitoring.