Size 49*33*15mm Weight N.W. Approximately 22g Material ABS GSM Chipset MTK2503 GPS Chipset Built-in System Memory RAM 32MB + Memory 32MB Color White/ Blue/ Red/Black/Green,accept OEM Screen NO Battery 400mAh SIM card slot 1pcs Micro SIM card Frequency Bands GSM/GPRS 850/900/1800/1900MHz Location Mode GPS+BDS+LBS GPS Location Precision 5-15m LBS Location Precision 100-1000m GSM/GPS Antenna Internal Battery Built-in 350mAh polymer battery (100hrs Standby Time) Charge mode Micro USB Physical Buttons Power button (SOS) APP Language Chinese/ Danish/ Dutch/ English/ French/ German/ Greek/ Hindi/ Hungarian/ Indonesian/ Italian/ Malay/ Pilipino/ Polish/ Portuguese/ Russian/ Spanish/ Swedish/ Thai/ Turkish/ Vietnamese, accept OEM Functions Location: GPS+BDS+LBS location, Geo-fence, Route playback Communication: SOS, 2-way phone call, Remote monitor Others: No disturbing time, SMS alerts(low-voltage remind/SOS remind), Remote shutdown, Alarm clock, Rewards, etc bluetooth bluetooth 3.0(Normal closed) G-sensor Support MIC Support supported operating systems android 2.3 and above system, IOS5.0 and above. call function double talk/The remote monitoring call function SOS call, voice monitor, whitelist for don't disturb power management Ultra-low power consumption of power management,intelligent dormancy Smart Geo-fence Outside the range setting can be automatic alarm historical route Can check history of three months One key emergency SOS one key emergency function ,autodialing wireless upgrading Software upgrade, remote debugging maintenance, remote setting parameters Working temperature -20~70â?? Working humidity 5%~95% Average stndby current < 3mA Average working current 45mA