The OBDII Tracker NR100 is a fully featured tracking device from Noran, it features both OBD II and J1938 and J1939 plug interface for personal vehicle and coomercial trucks. NR100 is equiped with 3 axis accelerometer. The fratures of the NR100 can track vehicle speed and location, detect harsh braking, and harsh acceleration and driver behavior. Items Specifications Dimension 72*48*24 mm Weight 100g Input Voltage DC 12V/1A Back-up Battery 150mAh/3.7V Power Consumption 100mA Operating Temperature -20 ° C~55 ° C Humidity 5%~95% Work Time 15 hours in power-saving mode and 3 hours in normal mode LED 2 LED lights to show GPS/GSMstatus Microphone/Speaker Internal microphone and speaker Sensor Tremble sensor GSM Frequency GSM 850/900/1800/1900MHz GPS Chip Latest GPS SIRF-Star IV chipset GPS Sensitivity -163dB Positioning Accuracy 10 meters