Fangrui Product Details Portapack H2 Flashed With The Latest Mayhem Firmware (the Latest Mayhem Firmware Is Released, And The Firmware Update Progress Is Consistent With The Official) + For Hackrf One 1mhz To 6ghz Sdr Software Defined Radio + 0.1ppm Txco One-touch Talk: This Smart Audio Receiver Is Equipped With Portapacks 3.5mm Audio Jack, Which Makes It Also Available As A Standard Configuration. Voice Walkie-talkie Radio One-touch Talk. Frequency Range: This Software-defined Radio Receiver Has A Frequency Range Of 1mhzghz. There Is A Micro-type Memory Card Slot For Data And Code Storage, Which Is Very Practical And Convenient. Precise Tuning: This Usb Sdr Radio Transceiver Uses Ppm Calibration, Which Can Achieve More Precise Tuning And Stable Performance. It Is Very Easy To Use And You Can Use It With Confidence. Easy To Use: Easy To Connect And Install. Press The Black Knob Once To Turn On And Press The Black Knob Twice To Turn Off. R9 Version For Hackrf One + H2 R4 Version Portapack H2 Battery Capacity:2000mah The Produ