Grwibeou Bluetooth 5.0 Audio Receiver Adapter 3.5mm RCA AUX Output Wirele Bluetooth Aux Stereo Receptor For Amplifier Speaker Feature:The first touch screen: This product is the first NFC Bluetooth receiver and transmitter with a touch screen. The required operation can be performed with a simple touch, without preing the button of the original version, thus effectively extending the service life of the machine.Bluetooth 5.0 Version: Complies with version 5.0 specifications, and is backward compatible with Bluetooth 4.2 / 4.1 / 4.0 / 3.0 / 2.0 / 1.0.2 in 1 Transmitter Receiver: Universal Bluetooth Audio Adapter can make your TV and other devices have Bluetooth function to stream audio to Bluetooth headset, or enables your home stereo Bluetooth function to receive wirele music streaming from mobile phones and tablets. For use with devices with USB ports and 3.5mm ports.Support Bluetooth hands-free calling: when in Bluetooth receiving mode, support incoming call answering/hanging up, etc.Support NFC: Built-in chip allows you to connect with NFC mobile phone or other NFC supported Bluetooth devices by touching the receiver.Support dual audio ports for connection: including 3.5mm and 2RCA audio ports, suitable for more devices (including 3.5mm cables and 2RCA cables).Remote wirele connection: The wirele Bluetooth adapter supports a connection of up to 15 meters / 49 feet, and can control long-distance music playback.Support USB playback: plug and play, you can play music without connecting to Bluetooth, and you can play music by plugging in USBSupport automatic turn on/off: use the charger cable to connect the car/other power supply, start the car or turn on the power, it will automatically turn on and connect to the last connected device. When the car shuts down, it will automatically turn off. Product specifications:NFC type Bluetooth receiver transmitterModel: BT19Bluetooth version: V5.0 + EDRInterface: Atreo analog/AUX3.5mmtFrequency response range: 10Hz-20KHzImpedance Output: 75Effective distance: 15 metersSignal to noise ratio:>; 90dBPerformance: high fidelity levelDistortion + noise: <;; 0.02%Support: A2dp \ avctp \ avdtp \ avrcp \ hfp \ spp \ smp \ att \ gag \ gatt \ rfcomm \ sdp Package Content1 x NFC BT19 5.0 Audio Transmitter/Receiver Adapter1x 3.5mm Aux Cable1x User Manual1xAV Audio Cable1xtype-c Charging power cord