... adaptability 3,small/light WT, beautiful appearence 433 mhz antenna:Firstly, Electrical characteristicsProduct name(Manufactory) 433 mhz antenna/ two way radio antennaModelBIO ... competitive at home and abroad.Secondly, Mechanical characteristicsProduct name(Manufactory) 433 mhz antenna/ two way radio antennaModelBIO-B028 handheld walkie talkie ...