Garmins ecoRoute HD is an easy to install device that transforms your compatible Garmin nuvi® GPS into a real-time diagnostics computer to help you conserve fuel and money through fuel-efficient navigation. The ecoRoute HD will send engine and emissions data from your carâ€™s diagnostic system to your nuvi and accurately calculate your fuel consumption, carbon footprint, engine performance and more. Plus, ecoRoute HD reads and displays OBD II diagnostic trouble codes and allows you to reset the check engine light. Compatible with the Nuvi 1690T, 1490T, 1390T, 1370, 1310 and 1210. Package includes ecoRoute HD adaptor, zip ties, adhesive tape and installation instructions.