Features: Listen music wireless: Stream your audio entertainment from your smart phone or tablet. Listen music through your perfect sound system from your smart phone or tablet with perfect sound quality; Easy to setup: Simply pair your smart phone or tablet to the audio adapter with a single button; Wireless range: Do not have to dock your mobile device with reliable audio connection and it can receive music from up to 10-12 meters( 30-40 feet) away; Works with most speakers, Superior acoustics: Plug the adapter into any A/V receivers and any powered speakers with standard RCA or 3.5 mm jacks. Don't compromise on sound delivers high quality acoustics; Support dual audio interface connection: Comes with 3.5mm and 2RCA audio interface, suitable for more devices; Support automatic power on/off: Use the charging cable to connect to your car or other power sources. When the car starts or has electricity, it will automatically turn on and automatically connect to the device you connected last time. When the car is turned off, it will automatically turn off; Compatible with Bluetooth 5.0, backward compatible with Bluetooth 4.2/4.1/4.0/3.0/2.0/1.0; Transmission rate: 100Mbps; Working frequency: 2400MHz; Package included: 1 x Bluetooth Receiver; 1 x USB Cable