Wide Operating Voltage Range 8V to 32V DC -Dual Band GSM/GPRS 900/1800 MHz -Multiple I/Os Including 1 Smart Input -GARMIN FMI/Multiple Sensors/Voice Support -Internal Backup Battery -Wide operating voltage range 8 to 32dv DC -Embedded full-featured @ track protocol -GPS standby time without reporting 58hrs,5 mins reporting 33hrs,10mins reporting 45hrs