Bluetooth 5.3 performance: equipped with a performance Bluetooth 5.3 chip for low loss data transmission, quick response, and stronger anti interference. Enjoy stable wireless playback with reduced delay and fewer drops. Turns non Bluetooth speakers and amplifiers into Bluetooth ready systems: connect to your speaker or amplifier audio interface to solve the problem of speakers or amplifiers without Bluetooth and enable Bluetooth playback. USB drive playback: supports USB flash drive playback with plugandplay operation and no driver needed. Flexible input options for broad compatibility: AUX / red and white Lotus / digital optical / U disk to meet the needs of different devices and audio interfaces. Use scenarios Scenario 1: Upgrading an older stereo system Connect to the AUX or red and white Lotus jacks on an older stereo or amplifier. Pair with a smartphone or tablet to stream music over Bluetooth without replacing your existing speakers. Scenario 2: Enhancing a home or mini theater system Use the digital optical input or AUX connection on a home theater receiver to add Bluetooth streaming capability. Stream music from mobile devices or laptops to your existing cinema setup with minimal setup effort. Scenario 3: Local playback from USB Insert a USB drive containing audio files and play directly, without a computer or driver installation. This provides a convenient way to enjoy local music in addition to Bluetooth streaming.