1. This is a Bluetooth audio transmitter with 3.5mm/optical/coaxial interface2. Pair and connect with Bluetooth receivers (such as Bluetooth headsets, Bluetooth speakers, Bluetooth audio receivers, etc.)3. The transmitter interface is connected with computers, TVs, game consoles and other devices, instantly turning your device audio signal into a wireless audio signal output4. Bluetooth version: 5.05. Frequency range: 2.402GHz-2.480GHz6. Bluetooth protocol: A2DP7. Input interface: 3.5mm + coaxial + optical audio port8. Support TF card: 64GB9. HiFi level: Support SBC Flac APE MP3 WAV WMA10. Micro USB interface: 5V power supply

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