Highlight HH OBD ELM327: 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. Connection: Android: 1.Open the "setting" of your android,and search bluetoothfrom ELM327:OBDll, then input password 1234. 2.Open your Torque--etting---OBD2 Adapter Settins---Connection Type---Bluetooth---back---Choose Bluetooth Device---OBDII[AA:BB:CC:11:22:33]. V2.1 Mini Bluetooth ELM327 OBD HH: 1. Support : Android/Windows. Please use Android system V4.1 to V4.3 version. 2. It can not support IOS system 3. Bluetooth Passwords: 1234 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.