BMT Bluetooth OBD2 scan tool - For check engine light & diagnostics - Android ONLY WORKS ON ALL VEHICLES LOCATED IN THE USA 1996 & NEWER! 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) Connects to your Android phone or Windows laptop by using an app or computer program which is purchased seperately, many are free and som cost from $1 - $50 depending on your needs! Compatible with Android phones Only - NOT FOR USE WITH iOS DEVICES!