Product Advantages: The world first 16 band portable jammer with 16 antennas design (Channel 12/13,15/16 used dual bands design, eliminate the mutual interference of the too many and close channels), blocking all cell phone 5G 4G 3G 2G LOJACK GPS Wi-Fi RF signals 18 watts power , Jamming range 2 to 25 meters (at-75dBm, depends on signal strength in given area). Good cooling system with 3 cooling fans inside and bigger hot sink, Nylon cover for handheld. With DIP switch, can turn on/off any signal band without affect other bands. With car charger, 12V DC/AC power supply is also available. With built-in bigger battery, can work 150 minutes, repeated charging. Battery capacity LCD display (Capacity percentage, working Voltage/Current).