... with charge self-protectionMicro SD card slot, expandable data storage spaceBuilt-axis electronic compass, pressure altimeter, G-Sensor, ... omni-directional high sensitivity GPS antennal Memory: 128MBFunctional propertiesl Storage Expansion: Micro SD card, 2G standard, the highest ... Waterproof grade: IPX-7l Operating temperature: -20 °C - +60 °Cl Storage temperature: -30 °C - +70 °Cl or drop: 1.5 m ...