Please Note : 1.ELM 327 BT Version support android/pc ,but can not support ios system.2.ELM327 BT 4.0 Support IOS/Android/PC, Without cd ,Scan QR Code from interface directly to download and upgrade APP,easy and convenient.3.WIFI ELM327 V1.5 Support IOS/Android/PC4. All ELM237 can only support some gasoline cars, can not support diesel cars.Mini HH OBD ELM327 V2.1 BT Code Reader Scan Tool Check Engine Super ELM 327 V1.5 Wifi / 2.1 BT OBD2 OBDII Car Diagnostic ScannerTop 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 hardwareinterface 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.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 system3. Bluetooth Passwords: 12344. Latest Version SW: V2.1.HW: V2.1.5. It can not support Diesel or Trucks6. The latest SW version supports most of OBDII protocols.Multi languages:Czech,Danish,German,English,Spanish,French,Croatian,Hungarian,Italian,Polish,Serbian,Turkish and russianCompatiblesoftware:1. Window:ScanMaster-ELM,ScanTool.net,PCMSCANELM,etc.2. Android:Torque,DashCommand,OBDCarDoctor,AutoDoctor,MiniOBD,EOBD,etc.3. Symbian:OBDScopeSpecifications:Model name: HH OBD Mini Bluetooth ELM327 V2.1Type: code readers & scan toolsOutput protocol: bluetoothColor: black Material : plasticVoltage: 12VCurrent: 45mAWave frequency: 38400HzApplicable scope: 5-10m / 16.4-32.8ftHH OBD Mini Bluetooth ELM327 V2.1 Car Diagnostic Scanner Specification:Vehicle Coverage: Works on all OBD2 Vehicles.1. SO9141-3 (5 baud init, 10.4Kbaud)2. ISO14230-4 (5 baud init, 10.4 Kbaud)3. ISO15765-4 CAN (11bit ID, 500 Kbaud)4. ISO15765-4 CAN (29bit ID, 500 Kbaud)5. ISO15765-4 CAN (11bit ID, 250 Kbaud)6. ISO15765-4 CAN (29bit ID, 250 Kbaud)7. KWP2000 5 10.4 KbaudCar model list :(only support 12V Gasoline car , diesel car not supported )span styl