Steps for usage: Insert the product directly into the car OBD interface and connect to the mobile app: TORQUE; There is a CD inside the package. There is an app to download in the CD: TORQUE; Top 5 Reasons to Get V2.1 Mini Bluetooth ELM327 OBD HH: 1.This is a vehicle diagnostic tool interface scanner, which is is used to read trouble codes, clear trouble codes and detect fuel pressure and so on. 2.OBDII Software for ELM327 is a free program that allows you to use your PC and a hardware interface to get the information from your car's computer. 3.The program is very user-friendly, and easy to learn. It is also very easy to install: simply extract the files into a folder on your computer's hard drive, and you're ready to go. 4. To uninstall the program, simply delete the entire contents of the folder where the program resides. 5.The software supports four platforms - For DOS/Windows/Android. This product is a non-oem, generic product. Notice: This device can't work with IOS system. Mini Bluetooth ELM327 is the newly developed wireless scan tool. It supports all OBD-II protocols: Works with all OBD-II compliant vehicles; Wireless (Bluetooth); Software included for Palm, PDA; Software included for Windows PC; Software included for Windows Smartphone; Supports ISO 9141, KWP2000 Supports SAE J1850;Supports CAN bus; V2.1 Mini Bluetooth ELM327 OBD HH Car Diagnostic Scanner; Specification:Support OBD-II protocols as follows: * ISO15765-4 (CAN) * ISO14230-4 (KWP2000) * ISO9141-2 * J1850 VPW * J1850 PWM; SAE J1850 PWM (41.6 kbaud); SAE J1850 VPW (10.4 kbaud); ISO 9141-2 (5 baud init, 10.4 kbaud); ISO 14230-4 KWP (5 baud init, 10.4 kbaud); ISO 14230-4 KWP (fast init, 10.4 kbaud); ISO 15765-4 CAN (11 bit ID, 500 kbaud) ISO 15765-4 CAN (29 bit ID, 500 kbaud); ISO 15765-4 CAN (11 bit ID, 250 kbaud); ISO 15765-4 CAN (29 bit ID, 250 kbaud); Device type: Car bluetooth read interface scanner; Interface type: Auto ELM327 V1.5 interface; V2.1 Mini Bluetooth ELM327 OBD HH Car Diagnostic