... hours, varies with temperature and wireless data rate– GSM/GPRS 3.8 hours, varies with temperature•Certification Class B Part 15, 22, 24 ... (Dsub 9 pin)• Fully Integrated, fully sealed internal 450 MHz receiver/transmitteroption:– Transmit power: 0.5 W– Range7 : 3–5 km ... 15 second intervals• 1 Hz, 2 Hz, 5 Hz, and 10 Hz positioning• CMR+, RTCM 2.1, RTCM 2.3, RTCM 3 ...