Bluetooth earphones are wireless earphones that use Bluetooth technology to connect audio source devices (such as mobile phones, tablets, or music players), allowing users to enjoy music or make calls without cable constraints. Bluetooth earphones typically have a communication distance of about 10 meters and a transmission rate of around 721kbps, operating in the 2.4GHz frequency band and supporting one-to-many data and voice communication. This technology was initially developed by several well-known companies with the aim of providing a solution for short distance wireless transmission. twelveModern Bluetooth earphones have multiple functions, including high-definition sound quality, touch operation, dual capacitive in ear detection, and more. The intelligent connection function, quick pop ups, and low latency experience of dual transmission technology have all improved the user experience. In addition, the improvement of chip performance and power consumption, as well as the testing of playback range data, are important indicators for measuring the performance of Bluetooth earphones.When choosing Bluetooth earphones, factors to consider include material safety, sensitivity, tuning, Bluetooth version, and battery life. There are various types of Bluetooth earphones on the market, such as the Easy Tong Bluetooth earphone TG11, which is recommended for its long battery life and excellent sound delay performance, while the Jabra Elite 7 Pro performs well in terms of wearing comfort. Different brands and models of Bluetooth earphones have their own characteristics, meeting the needs and preferences of different users.