How to download the GPS application
If you're going somewhere with slow internet, expensive mobile data, or no internet access at all, you can save the area to your phone or tablet in Google Maps and use GPS jammers offline.
After downloading the area map, just use the Google Maps app as usual. If you have a slow or no internet connection, Offline Maps will guide you to your destination, provided the entire route is within the Offline Maps range. Offline maps are downloaded to your device's internal memory by default, but you can also download them to an SD card.
4 Bands 1.2W with Ni-Mh battery 2000Mah, Working around 1.5 Hours Support use while battery charging.Shielding radius: (1-10) meters at -75dBm with omni hidden antennas.Could be used in car directly with USB charge cable.Pocket design look like the mobile phone power bank.
Although this type of jammer looks a little bulky, But It can effectively jamming 2G 3G 4G cell phone signals.18W power , jamming range up to 40 meters . Is a very cost-effective jamming device. Designed for the latest 5.8G signal, it can effectively block 5G mobile phone signals.
As the newest military-grade product, the advantages of this jammer are obvious. It has the characteristics of large jamming range and multiple jamming frequencies bands.