Due to its compact size and certain requirements for sound quality, qualified Bluetooth speakers are generally developed and designed by domestic portable audio manufacturers. In addition to inheriting some of the advantages of portable audio and Bluetooth audio, such as small size, convenient use, and some innovative audio, such as the Bluetooth series audio recently exposed by Zhongguancun Online, its body comes with a fixed device that can firmly fix the audio in a convenient and reasonable position, so that the audio will not shift with it.