GPS car alarm system/gps tracking device,car gps alarm tracker 4 band GSM compatible with original lock system kind of ... most, adjustablemicroSD cardOptionalto save driving records and photosAccessories Battery, GSM/GPS antennas, power/input/output cable, Mic, speaker, ... bar, and RS232 connected device Intelligent GPS car alarm system/gps tracking device/ car gps alarm tracker RS3000B1/C1,support TF ...