The Solara Field Tracker 2100 is designed, tested, and built by Solara for easy portable use in the toughest, most extreme environments. It is 25% lighter than the Field Tracker 2000 that also includes a tactile-response keypad, for situations where the user would like a lighter unit to carry as they travel. Using the Iridium Low-earth Orbit satellite system, the Solora FT2100 transmits and receives messages in less than a minute anwhere on earth with a clear view of the sky.