General SpecificationsFrequency Range UHF 400-470MHzRF Rated Power ?ü 5WChannel Capacity 16Channel Spacing 25KHzOperated Voltage 3.7 VBattery 1500MAh Li-ionBattery Life About 8 hoursFrequency Stability ?à2.5ppmOperated Temperature -30??c - +60??cAntenna Impedance 50|?Dimensions (L?áW?áH) (with battery，without antenna) 110?á50?á32 mmWeight (with battery/antenna) 198gCommunication Range about 2-4kmRF Power Output 3WModulation F 3ESpurious Emission ?ü65dBFM Noise ?ü-45dB(W) ?ü-40dB (N)Audio Distortion ?ü5%Transmitting Current?ü1.3ASensitivity (12dB SINAD)?ü0.20 uVSelectivity 55dB/50dBInermodulation ?Y65dBAdjacent Channel Selectivity ?Y60dBSpurious Response ?Y60dBAudio Power Output 1000mWPackage include: 1?á Portable radio1?á Inductively loaded antenna1?á Li-ion battery pack1?á Desktop charger AS GIFT￡¨ONLY US PLUG￡?1?á Belt clip1?á Handstrap1?á User's manual