2-WAY, HANDHELD 2-MILE FRS & 5-MILE GMRS RADIO COMBINED WITH WAAS-ENABLED GPS; WATERPROOF; INTEGRATED 12-CHANNEL GPS; 22 COMMUNICATION CHANNELS; USER MAY SELECT 1 OF 38 SUB-AUDIBLE SQUELCH CODES FOR SEMI-PRIVATE CONVERSATION; VOICE SCRAMBLER ; VIBRATION MODE FOR SILENT CALLS ; 8 MB INTERNAL MEMORY ; BUILT-IN BASEMAP OF NORTH ;& SOUTH AMERICA INCLUDING CITIES, HIGHWAYS, INTERSTATES, LOCAL THOROUGHFARES & SECONDARY ROADS WITHIN METRO AREAS, INTERSTATE EXIT SERVICES, AIRPORTS, RIVERS, LAKES & COASTLINES ; USING OPTIONAL MAPSOURCE® CD-ROMS, USERS CAN DOWNLOAD UP TO 8 MB OF ADDITIONAL MAPS ;PROVIDING FEATURES FOR TOPOGRAPHIC, BATHYMETRIC, STREET-LEVEL DETAIL & MORE ; CAN ALSO BE USED WITH OPTIONAL MAPSOURCE® FISHING ;HOT SPOTS & BLUECHART® CD-ROMS ; REQUIRES 3 AAA BATTERIES FOR 15 HOURS; SCREEN SIZE: 1.4"H X 1.4"W HIGH-CONTRAST LCD DISPLAY WITH BRIGHT BACKLIGHTING; DIM: 4.5"H X 2.3"W X 1.6"D; 7"H WITH ANTENNA