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...