Price:Negotiable
Brand:JINGMEI

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Technical parameters
1 GSM frequency band: 850/900/1800/1900
2 GPS continuous positioning, GPRS regular reporting;
3 Battery: 500mAh,3.7V built-in battery
4 Operating voltage: 3.3--4.2V DC
5 GPS positioning time: cold boot ˜38s (Open sky)
warm boot ˜32s (Open sky)
hot boot ˜2s (Open sky)
6 GPS positional accuracy: 10m (2D RM)
7 Operating ambient temperature: -20?~+50?
8 Operating ambient humidity: 20%~80%RH
9 Overall size: 45(L)*35(W)*15(H)mm

Functions:
1.SOS:if your kids are in dangerour suitations, if she print sos button, it will make cals for 3 family numbers a center number
2.Geo-fence: you can set an area, if the child go out off the area, it will alarm
3.Make calls: it can make calls for three numbers, and you can talk with each other.