6-in-1 Solar Power Multifunction Digital Altimeter with Compass and 1.2 Inch LCD Screen Solar power: - Low light amorphous solar cells - 7uA at 200Lux Altimeter: - Range from -2296 feet to 29500 feet. (-700M ~ 8992M) - Resolution of 1 meter or 3 feet Barometer: - Range from 300mbar to 1100mbar - Resolution of 1 mbar - Sea level pressure setting manual Weather forecast: - The weather forecast for next 12 to 24 hours - 4 weather status indicating, Sunny / Cloudy / Overcast / Rain Elctronic compass: - 4-bearing mode display - External magnetic field calibration - Magnetic declination setting - High accuracy, + / - 3 degrees - Resolution of + / - 1 degree