ActLight's Dynamic PhotoDetector (DPD) enhances the capabilities of smart rings with state-of-the-art photodetection technology. Designed for compact form factors, this sensor excels in environments where space is limited, such as inside a ring. Its operation at low voltages significantly extends battery life, crucial for the discreet and continual monitoring required by smart rings. The DPD's high sensitivity ensures accurate biometric readings, crucial for tracking vital signs like heart rate and activity levels without relying on additional amplification. This technology supports users in their wellness journeys by delivering reliable health data in a sleek, user-friendly device.