Smart wearable devices typically utilize sensor technology, which includes various types of sensors like accelerometers, heart rate monitors, and GPS. These sensors collect data about the user's activities, health metrics, and location. This information is processed to provide insights, facilitate tracking of fitness goals, and enable seamless connectivity with other devices. Wireless communication technologies, such as Bluetooth or Wi-Fi, are also crucial in smart wearables as they allow data transmission to smartphones or the cloud for further analysis and user interaction.