NPC Bluetooth 2in1 Transmitter Receiver Wireless TV Car 3.5mm 2RCA Audio Adapter Product Features: High-Quality Music: This Bluetooth receiver is equipped with Bluetooth 5.0 chip module and uses the new current acoustic isolation technology so that your traditional speaker can transmit high-quality sound wirelessly with no delay. Support NFC: Built-in chip, you can directly connect with NFC mobile phones or other Bluetooth devices that support NFC by touching this receiver. Supports Three Audio Port Connections: 3.5mm and 2RCA audio ports are included, suitable for more devices (including 3.5mm cables and 2RCA cables), and can also support U disk playback. Remote Wireless Connection: Effective distance up to 15 meters / 49 feet, control long-distance music playback. Support Automatic Turn on/off: Use the charger cable to connect to the car or other power sources. When the car starts or has electricity, it will automatically turn on and automatically connect to the last connected device. When the car is turned off, it will automatically turn off. The Latest Bluetooth 5.0 Version: Compatible with Bluetooth 5.0, backward compatible with Bluetooth 4.2 / 4.1 / 4.0 / 3.0 / 2.0 / 1.0. Product Specification: Type: NFC Bluetooth Receiver Material: ABS + PC Frequency Response Range: 10HZ-20KHz Signal to Noise Ratio: > 110dB Distortion + Noise: <0.02% Bluetooth Version: 5.0 Power Supply: 5V Transmission Rate: 100Mbps Interface: Stereo analog / AUX 3.5MM Output Impedance: 75Ω Effective Distance: 15 meters Performance: HiFi level Support: A2DP / AVRCP Package Included:  1Pcs NFC Bluetooth Receiver 1Pcs 3.5MM Audio Cable 1Pcs 2RCA Audio Cable 1Pcs Charging Cable 1Pcs User Manual