The Field Tracker 2000 is a rugged, professional-quality portable communicator which brings you worldwide automatic GPS tracking and two-way short messaging capability. Leading-edge features allow the Field Tracker 2000 to automatically track personnel and exchange messages while operating for days on a single battery charge. Performance is excellent from the extremes of polar regions through to the tropics. A comprehensive two-way Emergency Alert notification system with optional 24/7 monitoring gives you peace of mind by enabling you to communicate the nature of any emergency.