GF07 Mini GPS Real Time Car Locator for Security

Dial sim card number, then you can hear voice around this tracker, with no light and no noise, you can monitoring and spy what's going on around the tracker silently and secretly. function instructions: record: send number 555 to alarm phone, begin to record. sound monitoring: send number 666 to alarm phone gps track: send number 777 to alarm phone, the phone receive geographic position and map link. positioning trajectory: send number 102 to alarm phone. delete memory card content: send number 445 to alarm phone. reboot the phone: send number 999 to alarm phone, start success after 1 minute. reset the phone: send number 444 to alarm phone.