Hidden GPS Tracker Magnetic, 4G Long Battery Life, New Water Proof, up to 3 Month Battery Life-Ready to use, no Programming, SIM Card Included-US Support-Covert GPS Tracker Vehicle Tracking Device Car Tracker hidden GPS tracker Fleet Tracking Device Strong Magnets Included High powered magnets allow for easy setup on vehicles, equipment, containers or anything else metal. Metal surfaces are not required though, as the GPS tracker can work in suitcases or even packages being shipped across the country. There are a lot of uses for a portable and magnetic GPS tracker. Many GPS trackers out there require wiring into vehicles, but the portability of this GPS tracker from gpsnvision allows you to move it from vehicle to vehicle as needed.