FEATURES: NOT COMPATIBLE WITH IOS DEVICES (iPhone or iPad) Works with Android devices and Windows PC only. For iOS, please see the WiFi version or OBDCheck BLE. Very useful gadget for car owners to diagnose check engine light and monitor car sensors. Save time and money by finding out why the check engine light is on and fixing simple car problems by yourself Read engine diagnostic trouble codes, reset check engine light, and check if your vehicle is ready for SMOG inspection. Access a whole new world of information about your vehicle directly on your phone, tablet or PC. View car performance, sensor data (Engine coolant and oil temperature, O2 Readings, Mass air flow, Fuel Trim, etc.), monitor fuel economy, create your own dashboard, and more to discover. A third-party OBD2 App is required such as Torque Pro, OBD Fusion, Car Scanner ELM OBD2, Dr. Prius, OBD JScan and DashCommand. Turn your phone or tablet into a sophisticated diagnostic scan tool. Compatible with cars and light trucks made since year 1996 in the United States, as well as OBD II or EOBD compliant vehicles in other countries or regions. One-year replacement warranty. Genuine PIC18F250 chip, compatible with ELM327 v1.4. Supports all 5 OBD II protocols: KWP2000, ISO9141, J1850 VPW, J1850 PWM, and CAN. Access a whole new world of information about your vehicle