Multiple Positioning Mode:GPS+ AGPS+LBS Worldwide GSM+GPRS 4-frequency System:850/900/1800/1900MHz Automatic Time Update:Precise GPS time service and no manual time adjustment is needed Track:The 's specific location can be inquired through the cell phone APP or the computer Fence:Designate an area on the map by setting the device as the center point and the alarm will be triggered off immediately the of the device goes into or out of this area PlayBack:Inquire the moving of the device in the 3 months anytime and anywhere SOS:In case of emergency, press the SOS button and the device will send out the call and message for help to the (long press power button 4 seconds) :Counts the steps the has walked Reward:The reward is sent out through the APP on the 's cell phone and the reward can be viewed Voice:With the highly sensitive microphone, the sound around the device can be heard in real time in case the emergency happens to the Remote Power-off:The device can be turned off through the APP on the 's cell phone Remote Restart:The device can be restarted through the APP on the 's cell phone Intelligent Power Saving:The device turns off/on the GPS and data upload in the time range specified through the APP on the 's cell phone. Map:Baidu map and Google map. Colour:As Shown Material:plastic Package Contents: 1 * Mini GPS Tracker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.