"FEATGBUILT-IN 3-AXIS TILT-COMPENSATED ELECTRONIC COMPASS AND BAROMETRIC ALTIMETER;DUAL BATTERY SYSTEM,RECHARGEABLE LITHIUM-ION PACK OR TRADITIONAL AABATTERIES;BUILT IN MEMORY:3.0GB;DIMENSIONS:2.9W X 5.7H X 1.4D INCHES NOMINAL;DISPLAY SIZE:2.0W X 3.5H X 4.0 DIAG INCHES NOMINAL;DISPLAY RESOLUTION WXH:272 X 480 PIXELS;DISPLAY TYPE:BRIGHT,TRANSFLECTIVE 65K COLOR TFT,DUAL-ORIENTATION TOUCHSCREEN,SUNLIGHT READABLE;WEIGHT:10.2 OUNCES;BATTERY LIFE:UP TO 16 HOURS LITHIUM-ION ,UP TO 22 HOURS (AA BATTERIES);WATERPROOF:YES;FLOATS:NO;INTERFACE HIGH SPEED USB AND NMEA 0183 COMPATIBLE,WAYPOINTS:4000;ROUTES:200;TRACK LOG 10,000 POINTS,200 SAVED TRACKS"