Bluetooth Transmitter Audio Adapter With Fiber Optic Plug Bluetooth 5.0 Dual Link Support Compatible with Optical Audio DevicesBluetooth Version: 5.0 Input:Fiber optic Plug Bluetooth Protocol: A2DP Support HIFI/SBC/AAC/APT-X Multipoint connection: Two Point Connection Frequency domain: 2.402GHz-2.480GHz Frequency Response: 20Hz-20kHz SNR(Signal to Noise Ratio):>90dB Transmit Range: Up to 10m/33ft THD ( total harmonic distortion ): <0.1% Micro USB Port for power supply(5V) Charging cable included Products Size:L68xW13xH13(mm)