Different from previous version :
1,it supports geo fence funtion and can work with all 4 frequencies
2> The electronic screen has replaced the LCD screen to avoid flickering , so as to save power
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3> The raised part on the upside of the previous version has been removed
4> We have added
mark "SOS","CALL1" ,"CALL2" on the buttons to indicate their separate function . Then you can dial the correct buttons as you favor , much better for old people
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