gps car tracker *cost-effective and functional Mobile Digital ... selling JK88-4X hard disk memory gps car tracker/gps car tracker/car dver/dvr/car video tracking system PRODUCT OVERVIEW JK88- ... event video (pre-recorded), etc.6, support the SD card automatically covered, protect alarm video7, supports 4-way ... support timer turn on/off Function22, support the car keys on the control of the boot and delay ...