Compatibility with : For Mazda 2 3 5 6 CX-7 MX-5 key fob remote key is 3 buttons 433Mhz with chip（4D-63 chip 80-Bit also known as 4D-83 Chip. for 2005 - 2015 Mazda 5 key, for 2007-2012 Mazda 6 Key, for 2007 - 2015 Mazda CX-7 key，for 2006-2012 Mazda MX-5 key fob Remote key.
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