Features
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

Functions: 
• Read diagnostic trouble codes, both generic and manufacturer-specific, and display their meaning (over 3000 generic code definitions in the database).
• Clear trouble codes and turn off the MIL ("Check Engine" light)
• Display current sensor data, including: 
• Engine RPM
• Calculated Load Value
• Coolant Temperature
• Fuel System Status
• Vehicle Speed
• Short Term Fuel Trim
• Long Term Fuel Trim
• Intake Manifold Pressure
• Timing Advance
• Intake Air Temperature
• Air Flow Rate
• Absolute Throttle Position
• Oxygen sensor voltages/associated short term fuel trims
• Fuel System status
• Fuel Pressure
• Many others...

look for more details about it, please to download the PDF file