Features: 1. Only we can read and write Eeprom safely for 1D47J and 2D47J on board,not to Soldering MCU(including 2D47J of EWS2 or EWS3). 2. Only we can supporting EWS4.3 system now. 3. It have “BMW keys reset” function. 4. It have “EWS system reset” function. 5. It have “EWS data restoration” function. 6. It can readout BMW key stored data:keys No.,VIN and milage. 7. It can automated analysis EWS data,VIN and automated saving to ensure data safety. 8. Handheld,no PC connection needed,having the convennience of movability. 9. Integrating “intellectualized operation instruction” function. 10. Chips of massive storage which can save EWS data of 510 BMWs in maximum at one time.