A photoplethysmography (PPG) sensor is a cost-effective and efficacious way of measuring health conditions such as heart rate. oxygen saturation. and respiration rate. In this work. https://www.diegojavierfares.com/hot-savings-Gates-OE-Replacement-Timing-Belt-Fits-1993-1998-Toyota-Supra-2JZ-2JZGE-2JZGTE-mega-choice/