This Infographic specifies TK419 4G GPS tracker device functions which is comprised of a simple two piece of plastic enclosure which is waterproof IP65 for reliability, durability and low cost assembly and more. Go for detailed features at https://www.eelinktech.com/tk419-4g-lte-3g-wcdma-2g-gsm-gps-vehicle-tracker-ignition-fuel-cut-off-ibutton