This jammer effect of the Global Positioning System (GPS) without interfering with the normal operation of mobile phones. With the built-in rechargeable lithium-ion battery you can use it for more than 4 hours. When the battery runs out you can charge it again or you can plug the jammer with the included cable directly into the car cigarette lighter. With a very small size (95x45x20 mm), lightweight and an easy to carry design, this device is the most appropriate protection of your personal life against GPS tracking.