... logging of 100,000 waypoints, built-in an 800 MAH battery for long lasting operation without external power. Harsh-weather and ... displayPower port+ 5V/DC, 500mA (max) power supplyBuilt-in memory for 10,000 points data loggingAntennaGPS/SMS connection, - 26dB, Cable ... 5% - 95%Storage temperature -25 to + 85Backup batteryNickel- hydrogen battery 4.8V/DC 800 MAHGPS dynamic Conditions:Altitude 18,000 ...