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21w DC12V Car Charger 30m Radius GSM CDMA DCS 3G 4G 5G GPS WiFi Portable Signal Jammer Advantages: 1. 21 bands, 16 antennas omni antennas 2. Block 2G 3G 4G 5G 3.5G 5.8G VHF UHF GPS WiFi Lojack Walkie ...