Garmin GPSMAP 78SC
Here's what other sites are saying:
The waterproof, floating Garmin GPSMAP 78sc GPS comes with preloaded BlueChart g2 coastal charts and features a built-in compass, altimeter and high-sensitivity receiver. Bright, sunlight-readable 65K TFT display measures 2.6 in. (240 x 160 pixels) and presents imagery in crisp and colorful detail. High-sensitivity, WAAS-enabled GPS receiver features HotFix(TM) satellite prediction for a rapid first fix and reliable performance in urban canyons or under dense foliage. WAAS (Wide Area Augmentation System) technology can pinpoint your position to 3m or better. Worldwide shaded-relief basemap supports Garmin custom maps and BirdsEye(TM) satellite imagery (custom maps and satellite imagery sold separately). Preloaded BlueChart(R) coastal charts include shorelines, depth contours, navigational aids, harbors, marinas and more throughout the U.S. and Bahamas. MicroSD(TM) card slot enables expanded memory and the option of additional mapping (microSD card sold separately). High-speed USB connectivity makes loading charts and maps quick and easy; interface cable included. Marine-friendly unit floats and features a dedicated "Man Overboard" emergency button and meets IEC 60529 lPX7 standards (can be submerged to 1m for up to 30 min.). Enjoy effortless sharing of waypoints, tracks, routes and geocache locations between compatible units with ANT wireless capability. Built-in 3-axis compass and barometric altimeter provide a steady bearing, altitude and atmospheric pressure trends. Navigation instructions can be shared with repeaters, plotters and autopilots using NMEA protocols through the dedicated serial port. Comes with a USB cable, wrist strap and quick start guide. The Garmin GPSMAP 78sc operates for up to 20 hrs. on 2 AA batteries (sold separately).