The MADDOX™ Advanced 4.3 in. Screen OBD2 Code Reader is a handheld diagnostic tool with enhanced data streaming for live all-systems diagnostics. It is capable of 16 services including calibrations, relearns, and system resets. Scan trouble codes, stream live data, or perform active tests and service resets. The code reader integrates with the RepairSolutions2 app on your smartphone or tablet for additional functionality.