Firward Walkie Talkies for Adults Long Range Rechargeable Walkie Talkie 4 Pack Two Way Radios Up to 5 Miles Range in The Open Filed 16 Channels with EarpiecesHeadphones Walky Talky

Technical Specifications Up to 16 Channels Operation Voltage:3.7V DC Operation temperature:-10°c-+50°c Antenna:high gain antenna Antenna impedance:50? Mode of Operation:Simplex Charging Current:500 mA Battery Capacity:1500mAh Transmitter: RF Power: 2W Spurious Component:?7.5?W Frequency Stability:5 ppm Max Fr. Deviation:?+-5KHz Current:?1200mA Audio Response(300-3000Hz):+6.5 to-14dB Adjacent Channel power:?65dB Modulation sensitivity:10+-2mV Receiver: Sensitivity:?0.2?V Occupied Bandwidth:?16KHz Adjacent Ch. Selectivity:?65dB Intermodulation:?55dB Audio Output Power:1W Audio Distortion:? 5% Frequency Stability: 5ppm Transmission current: 150 mAh Receiving current:55 mAh Standby current:55mAh Audio Response(300-3000Hz):+7 to -12.5 dB Packing list: 4xFirward Walky Talky 4xBatteries 4xChargers 4xHandstraps 4xBelt Clips 4xEarpieces/Headsets 2xUser Manual 4xAntennas