The 5 bands portable  or cell phone jammer is most popular handheld blocker, it is aiming at car tracking,camera spying for

those security units and individuals to protect their privacy. It not only blocker the all GPS signals but also the mobile phone

frequency.The car charger is convenient to provide power on the car and guarantee the outdoor interference. The good cooling effect

enables it to work for a long time. In the radius of 5-15 meters range of effectively  jamming GPS signals and wireless wifi candid

transmission signals,you do not worry about the whereabouts of being tracked, candid.