1 Small, good looks and fashionable 2 Long standby time 3 Support positioning indoors and outdoors, 4,high sensitivity, fast 2010 best Gps tracker Functions1 Low power consumption. 2 speed dial buttons and one SOS button .3 SOS signal can be sent to the control center if the SOS button is pressed, so as to indicate the user’s location precisely.4 Built-in microphone to support two-way voice ...