... 400 and 600 especially designed for any meter-level GPS mapping applications such as natural resources, forestry, agriculture, ... life15 hours2xAA(15hours), Li(25hours)WaterproofIPX-7GPS ReceiverSIRF III 20 channels - High Sensitive GPS moduleAcquisition TimeCold Start: < 35s, Hot Start: ... <2s, Warm Start: <2sGPS Accuracy3-7m (GPS only), 1-3m (SBAS)SBASWAAS, EGNOS, MSASUpdate Rate1 second, ...