Feature:1. Using advanced technology to build the system, support tens of millions of users concurrent, stable system, fast speed.2. The computer sound card function can output better signal than the computer sound quality to receive the speaker playback.3. Battery power supply, charging management, onebutton switch machine, automatic back connection, stereo output, nondestructive decoding.4. Support usb flash drive to play. For Bluetooth version of 5.0, dependable in use.5. 5V Power supply, stable and excellent performance, convenient to use.Specification:Item Type: Audio Receiver ModuleMaterial: Plastic Power supply: 5VAPP Download:For IOS: Go to the Application Store and search: Xin Yi Lian or SinilinkFor android: Mobile phone APP download: PP assistant. Search "Xinyilian" to download or scan the codes to download the APP in PP Assistant.Package List:1 x Audio Receiver Module