Attery Built-in 500mAhStandby time:6daysWorking time:3days( if set 10 minutes once positioning )GSM/GPS Antenna Built-in designWorking ptemerature: -20 ~ +70Working humidity: 20% ~ 80% RHPositioning time cost(open sky) Cold start:38 SecWarm start:29 SecHot start:5 SecHost size: 50*29*12mmHost weight: 25gVoice Recorder and Monitor:YesSMS coordinate:YesPackage includ:1* Host,1* Collar,1* USB cable,1* User manualFunction :Multiple Positioning Mode: GPS+ AGPS+LBS+ WifiWorldwide GSM+GPRS 4-frequency System: 850/900/1800/1900MHzTrack: The user's specific location can be inquired through the cell phone APP or the computerFence: Designate an area on the map by setting the device as the center point and the alarm will be triggered off immediately once the user of the device goes into or out of this areaPlayBack: Inquire the moving routes of the device in the past 3 months anytime and anywhereSOS: In case of emergency, press the SOS button and the device will send out the call and message for help to the guardianFind Device: The lost device can be found through the APP on the cell phoneVoice: With the highly sensitive microphone, the sound around the device can be heard in real time in case the emergency happens to the userRemote Power-off: The device can be turned off through the APP on the guardian's cell phoneRemote Restart: The device can be restarted through the APP on the guardian's cell phoneIntelligent Power Saving: The device turns off/on the GPS and data upload in the time range specified through the APP on the guardian's cell phone