AD-08 GPS Tracker for Cars OBD Plug and Play 4G Locator Anti-Loss Device with Overspeed Alarm Accurate positioning and real-time tracking Small size,installed in the car does not take up space Easy to install,used it on car's OBD interface plug and play Specifications: Product Model: AD-08 Dimension: 48 x 42 x 17mm Product weight: 38g Positioning mode: GPS+Beidou+LBS Chip model: MTK2503 GPS sensitivity: -162Db Accuracy: 3-30m Hot start: 2sec average Warm start: 30sec average Cold start: 38sec on average Backup battery: 60mAh (3.7V) (backup battery will be used automatically after vehicle power off) Operating voltage: 12V-73.6V LED lights: 2 LED lights to show GPS,GSM status Installation: car OBD interface plug and play Certification: RoHS,FCC,CE Package included: 1 x GPS Tracker 1 x English Manual Other items not included