... RF,DC5V,2AUX OUT 4.wireless,bluetooth 2.4G audio transmitter receiver Specification: frequency response45Hz-20KHzusing frequency2402- ... :1090, 1060bluetooth audio transmitter receiverSpecificationBluetooth specification: Bluetooth V2.1/V1.2Function range: 15 metersFrequency response: 2.4GHz-2.4835GHzReceiving sensitivity: ... any question ,Thanks a lot! 2.4GHz bluetooth audio transmitter receiver