Product Feature: Vehicle management is more intelligent. Important areas can independently set electronic fences, and enter and exit real-time alarms. One account to manage multiple vehicles, car rental, loan fleet, taxi management is more efficient Easy for installation and hidden, Small size, easy play & plug,much more convenient for hiddenAbout Network and Suitable for 9-40V most OBD Vehicle, 2G GSM band:850/900/1800/1900Mhz The device can be used normally in your country. Except for these countries: USA, Australia, New Zealand, Korea, Japan, Canada, Singapore, China Taiwan Compatible With 99% OBD VehiclesThis tracker works with 9-40V voltage, can work with most OBD vehicles Real time tracking, We can request real-time device location information using the platform, mobile application (Micodus) and SMS. Tracking Method: GPS + LBS, SMS command: G123456 or where Multiple Tracking Ways, You will can track your car via SMS, mobile application and web tracking platform. Voice Monitor, With good quality microphone , you will can monitor the voice around the device clearly Multiple Alarms, Overspeed alarm, Vibration alarm, Plug out alarm, Geo fence 80mAh Internal Battery, Once the external battery disconnected, the device still can keep working 1-2 hours. Product Specifications: Size: 45*25*32mm Positioning mode: GPS+Beidou+LBS Use temperature: -20 degrees Celsius -70 degrees Celsius Operating humidity: 20%-80%RH Working voltage: 9V-36VDC Standby current: