Smart wearable devices are powered by a combination of technologies, including sensors, wireless communication, and microprocessors. These components allow the devices to collect data, track user activity, and communicate with other devices or the cloud. Sensors measure various metrics such as heart rate, steps, and sleep patterns, while wireless communication protocols like Bluetooth enable connectivity with smartphones and other devices. Together, this technology enables enhanced functionality, such as health monitoring, notifications, and lifestyle tracking, making smart wearables valuable tools in personal health management and fitness.