NEW AD20 AD20 supports all OBD2 functions of ELM327 Bluetooth and AD10, including engine diagnostics and additional extended features. AD20 Features: 1. HUD Function: AD20 supports a heads-up display function, allowing you to change instrument panel styles online. 2. Driving Records & Analysis: AD20 records driving data and provides driving analysis, tracking fuel consumption, distance, and driving behaviors for each trip. 3. Performance Test: AD20 enables vehicle performance testing, displaying key metrics such as acceleration over 100 meters. 4. Engine Diagnosis: Check engine light support and reading of engine trouble codes. 5. Error Code Analysis: AD20 can read and clear OBD2 error codes, then analyze them to help identify causes and potential solutions. 6. Free Update: Equipped with the latest Bluetooth 5.0 technology, compatible with Android and iOS devices. The AD20 software is independently developed and receives free updates. 7. High Quality: Built with full-pin high-quality chips and durable housing, tested thoroughly before delivery. Hardware and software upgrades allow for reliable troubleshooting. AD20 Full Engine Diagnostic Tool