Magnetic Mini GPS GSM/GPRS Tracking Device US GF07Real Time Car Locator Tracker
GSM Band: 850/900/1800/1900Mhz. Reset the phone: Send number 444 to alarm phone. number 999 to alarm phone, start success after 1 minute. Sound monitoring: Send number 666 to alarm phone. Record: Send number 555 to alarm phone, begin to record.