Global Positioning Systems (GPS)

Garmin eTrex Solar, Solar Powered Outdoor GPS Handheld, GPS Device for Hiking and Geocaching, Multi GNSS Support, Long Battery Life, 2.2" High Contrast Screen, Digital Compass The 2.2 Inch high-contrast display is easy to read, even in bright sunlight Get appropriate battery life when used in sunny conditions (75,000 lux) or up to 200 hours with no solar charging Multi-band GPS gives you access to multiple frequencies... Garmin eTrex Solar, Solar Powered Outdoor GPS Handheld, GPS Device for Hiking and Geocaching, Multi GNSS Support, Long Battery Life, 2.2" High Contrast Screen, Digital Compass