USB Wifi Dongle -Bluetooth 5.0 Transmitter Receiver NFC A/V RCA Audio Wireless HiFi Adapter, Long Playtime Highlights generic brand Bluetooth 5.0 Transmitter Receiver NFC A/V RCA Audio Wireless HiFi Adapter, Long Playtime Description: Bluetooth version 5.0: Meets 5.0 specification, backward compatible with Bluetooth 4.2/4.1/4.0/3.0/2.0/1.0. Receiver Transmitter: The Universal Bluetooth Audio Adapter can make your TV and other devices have Bluetooth function to stream audio to Bluetooth headphones, or make your home stereo Bluetooth function can receive audio. wireless music from mobile phones and tablets. For use with devices with USB ports and 3.5mm ports. Support Bluetooth hands-free call: In Bluetooth receiving mode, support incoming call answering / hanging up etc. Support NFC: Built-in chip, you can directly connect with NFC mobile phone or other NFC supporting Bluetooth devices by touching this receiver. Support two audio ports for connection: 3.5mm and 2RCA audio ports are included, suitable for more devices (including 3.5mm cables and 2RCA cables). Specification: Size: 10.5x6.6x2.8cm NFC Type Bluetooth Transmitter Receiver Model BT19 Version Bluetooth V5.0+EDR Interface Analog Atereo/AUX3.5mmt Frequency Response Range 10Hz-20KHz Output Impedance 75 Effective Distance 15 Meters Signal to noise ratio >90dB HiFi performance level Distortion + noise