Mini GPS Tracker Gf21

- 1 multiple positioning mode: wifi+ agps+lbs+gps - 2 worldwide gsm+gprs 4-frequency system: 850/900/1800/1900mhz - 3 automatic time update: precise gps time service and no manual time adjustment is needed - 4 track: the user's specific location can be inquired through the cell phone app or the computer - 5 fence: designate an area on the map by setting the device as the center point and the alarm will be triggered off immediately once the user of the device goes into or out of this area - 6 playback: inquire the moving routes of the device in the past 3 months anytime and anywhere - 7 sos: in case of emergency, press the sos button and the device will send out the call and message for help to the guardian - 8 walk: counts the steps the user has walked - 9 reward: the reward is sent out through the app on the guardian's cell phone and the reward progress can be viewed - 10 find device: the lost device can be found through the app on the cell phone