OBDResource ELM327 Car Fault Bluetooth Diagnostic Instrument Supports iO1. Bluetooth 4.2 supports iOS and Android phones, self-developed software FasLink X (App Store, Google Play search download)2. The software does not need to pair Bluetooth, no password is required, run the APP to automatically connect3. Application: 12V cars equipped with standard OBD interface since 19964. Mainly used to read and clear diagnostic trouble codes, reset the check engine light, view IM ready for SMOG inspection and real-time sensor readings (O2 readings, EOT, EGT, throttle, boost, speed, fuel trim, etc.)5. Whenever you turn on the check engine light or want to check the performance of your vehicle, this little tool will help you better understand your vehicle6. High compatibility: compatible with all 1996 and newer models of cars, SUVs and light trucks sold in the United States, Europe and Asia7. Support all OBD2 protocols: J1850 PWMJ1850 ; VPWISO9141CANKWP20008. Suitable for iOS and Android devices, compared with other Bluetooth 3.0&WiFi versions, this OBD2 scanner Bluetooth 4.0 has stronger connection stability, and the connection distance can reach 20-50 meters (when there is no obstacle), which is more convenient9. Size: 2.76x1.85x0.98 inches