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With Cooling Fan 8 Channels 3W 2G 3G 4G 2.4G Signal Jammer GPS Satellite Blocker Office School Anti Tracker Position Protector Anti-cheating

$199.00
Working Frequency  : A. Channel 1 , 2G :  870-880MHz  Channel 2 , 2G  : 930-960MHz  Channel 3 , 2G : 1805-1880MHz Channel 4 , 2G : 1880-1920MHz Channel 5 , 3G :   2010-2170MHz Channel 6,  2.4G : 2400-2500MHz Channel 7,  4G   :  2300-2400MHz Channel 8,  4G   :  2555-2655MHz OR  B. Channel 1 , 2G :  870-880MHz  Channel 2 , 2G  : 930-960MHz  Channel 3 , 2G : 1805-1880MHz Channel 4 , 2G : 1880-1920MHz Channel 5 , 3G :   2010-2170MHz Channel 6,  2.4G : 2400-2500MHz Channel 7, Satellite    : 1555-1585MHz Channel 8,  4G   :  2555-2655MHz