| 2.4G wireless headset 2.4Ghz wireless earphone2.4G wireless headset 2.4Ghz wireless earphone PC earphone Specification Transmitter Working Frequency: 2404MHz~2472MHz Power Supply: DC 5V Transmitting Distance: Approx. 80m Operating Current: 50mA Transmit Power: ≤7dBM Receiver Working Frequency: 2404MHz~2472MHz Power Supply: DC 3V(two 1.5V batteries) Operating Current: 35mA Frequency Response: 70Hz ~ 10KHz S/N Ratio: ≥32dB Non-linear Distortion: ≤1% | 
