Features Specifications:Sell GPS Jammer/Isolator/Blocked(Car Adapter Type)  This device will jam all GPS and GSM signals up to a distance of 8 metres. It simply plugs into an ordinary car cigarette lighter socket and is active immediately blocking all types of tracking and navigational devices.  Only GPS jammers will prevent the GPS loggers and GPS/GSM devices to get GPS positions from the Satellites.  Specifications:  Effective range: Up to 8 meters radius  Input power: 12.0v DC via cigarette lighter socket  Output signal strength: 200mW  System: All systems worldwide  Signal source: Synthesized  Operation temperature: -10c to +50c  Humidity: 5% to 80%  Size: L 110 x W 62mm approx  Weight: 140gm