Portable Phone Signal Jammer

This portable phone signal jammer can be taken everywhere with a 2-5 hours rechargeable lithium battery, perfect for car, meeting room, class room, patrolling, etc. 

With the accessory of AC adapter, Car charger, the portable phone signal jammer can also be used directly on a car vehicle to shield the PHONE GPS tracking signals on the vehicle. 

The portable phone signal jammer can avoid the drivers calling or messaging when driving to avoid unnecessary accidents. 
It can avoid the sales calling when real estate calling on business room to avoid the vicious competitions between different estate sales. 
It can avoid the following-up of private cars by dangerous peoples etc.