Digital One-to-One calling - allows you to call and talk privately with a specific user's radio.  Group calling allows one-to-many communication.  Rugged, compact polycarbonate housing with rubber overmold for comfort.  Meets military 810 C,D, E and F specifications for shock, vibration, water, dust and temperature extremes.  Frequency hopping prevents interruption.  License-free. Additional features include:  Group scan, Called ID, text messaging, and recent call list.  Includes Lithium-ion batter- up to 14.5 hours, 3 hour desk charger and swivel carry case.