1. With mobile phone app, fuel and power failure alarm function. 2. Multiple positioning mode 3. Real street map, easy to view 4. Built-in high-end chip acceleration, no lag 5. Support multiple types of car positioning 6. Multiple modes of positioning: GPS satellite + LBS + Beidou + WIFI remote positioning specification: Frequency band GSM 900/1900MHz Network GSM/GPRS Working voltage 9-36V Positioning time Cold start 35s-120s Hot start 21s Positioning accuracy 15 meters (under 3D positioning mode) Working temperature -20 Celsius~+55 Celsius Special Feature: Internet Connected Model Name: C13 Gps Module: Yes Screen Size: No Screen Voltage: 12V Battery Life: 30 Hours & Up colour:Black Material:plastic Size:31x31x57mm Package Contents: 5 x Tracker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.