More than $500
Cell Phone Jammer 3.5G Blocker Jamming WiFi GPS UHF VHF 315MHz Signals
GPS/WIFI/GSM/3G/4G Jammer High Power Jamming Device

    GPS/WIFI/GSM/3G/4G Jammer High Power Jamming Device

    $1306.39

    This all-in-one adjustable jammer can block all cell phone frequencies and the wireless spying probe in the examination.In China,it is used in the college entrance examination designated by  National Education Department to avoid cheating.Of course more than that ,you can use in the court,meeting and other situations if you need.

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