Car GPS tracker TK-206 has the built-in GPS/GSM antenna that ideal for car tracking,it support SOS call, Microphone for listen-in, relay for power cut off /on function. Easy for installation for car and simple to operate.
OBD GPS tracker TK-110 is used on car / vehicle tracking, connect to OBD of car for charging, support web real-time tracking, Google map locating and phone app tracking. Also it support main power cut alert,movement alert, Vibration alert etc.
VT-321 is the GPS tracker built-in 3G GSM module, locate and track by 3G network, support 850/900/1900/2100 MHz. Ideal for motorcycle tracking, car tracking or vehicle tracking. Also it supports option function like RFID, fuel monitoring, accident alarm etc.
Car GPS tracker VT-330 supports base car GPS tracking function, like SOS,relay etc, more importance is that it supports dual SIM card slot, then people can use 2 SIM cards together on one tracker for tracking across different GSM area.