Description 1. tachopro(obd2iso9141 interface + tachopro dongle integrated) 2. this compact interface will allow you to easily read/write/modify the mileage/km on your car without the need to remove the dash. It connects to the on-board diagnostics port located in your car. 3. this kit will also allow you to use it as a diagnostic iso9141 compatible interface. 4. this tool is used daily by engineers all over the world and is very effective. The software is DOS based and in german, but very easy to use. 5. a laptop or PC is required, note that on very fast ones over 233 MHz the software might not work.