1.Godiag GD801 ODOMaster Mileage correction Better than OBDStar X300M via Obdii
2.Multi function in 1:Read Odometer, Write Odometer, Read Flash,Write Flash, Read Eeprom, Write eeprom.
3.One-Click Upgrade, Wide Vehicle Coverage, Multi-language support.
4.One year free update online, after one year update cost $149.