Bluetooth earphones establish wireless connections with devices such as mobile phones and computers through Bluetooth technology, freeing them from the constraints of traditional wired earphones and making them more convenient to use. Bluetooth earphones are designed to be lightweight, easy to carry, and can be used anytime, anywhere. Bluetooth earphones can effectively isolate surrounding noise, protect user privacy, and enhance listening experience. Some Bluetooth earphones have active noise cancellation function, which can recognize and eliminate environmental noise, providing a purer audio experience.

The working principle of wireless earbuds is mainly based on Bluetooth technology. After establishing a Bluetooth connection between the earbuds and the playback device, the playback device will transmit audio signals to the earbuds through Bluetooth. The audio processing chip inside the earbuds decodes and amplifies the received audio signal, and then plays it back through the speaker. At the same time, some wireless earbuds also have microphones and noise reduction technology, which can achieve call and noise reduction functions.