★Mini Incognito Hidden 8 Antennas Pocket Cell Phone Jammer, can Block 2G/3G/4G and LOJACK GPS L1 WIFI 2.4G Signals
★Shielding radius: 3-5 meters at -75dBm with omni hidden built-in antennas
★with Ni-Mh battery 2000Mah, Working more1 Hours Support use while battery charging.
★Could be used in car directly, with car charger and AC charger
★Can be used directly on the car via USB 5V charging cable