BAROMETRIC ALTIMETER & BRAND NEW 3-AXIS ELECTRONIC COMPASS SCRATCH RESISTANT LENS ON THE 2.6 COLOR thin-film transistor DISPLAY WITH BACKLIT DISPLAY &KEYPAD RESOLUTION: 240 X 160 PIXELS BATTERY LIFE: GREATER THAN 20 HOURS USING 2 AA BATTERIES USB MINI-B CONNECTOR FOR DATA UPDATES WITH A PC RUGGED IPX7 WATERPROOF STANDARDS QUAD HELIX GPS ANTENNA REMOVABLE VHF ANTENNA MICRO SECURE DIGITAL CARD SLOT AVAILABLE FOR PREPROGRAMMED MAPSOURCE MAPPING DETAIL SUCH AS US TOPO INLAND LAKES BLUE CHART & CITY NAVIGATOR STORES 1000 WAYPOINTS 50 ROUTES & 10000 TRACK POINTS AREA CALCULATION FEATURE BUILT-IN AUTO ROUTING BASE MAP INCLUDES: ASTRO 220 VHF ANTENNA TRIP & WAYPOINT MANAGER USB CABLE BELT CLIP SWIVEL BUTTON LANYARD OWNER S MANUAL & QUICK START GUIDE WEIGHT: 6.4 OUNCES WITHOUT BATTERIES