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Amazon.com: Bennett Marine Instructional DVD for The Garmin GPSMAP for The 420, 430, 440, 450, 520, 530, 540 and 550 : Electronics
![Amazon.com: Bennett Marine Instructional DVD for The Garmin GPSMAP for The 420, 430, 440, 450, 520, 530, 540 and 550 : Electronics Amazon.com: Bennett Marine Instructional DVD for The Garmin GPSMAP for The 420, 430, 440, 450, 520, 530, 540 and 550 : Electronics](https://m.media-amazon.com/images/I/51ZBHhLuuKL.jpg)
Amazon.com: Bennett Marine Instructional DVD for The Garmin GPSMAP for The 420, 430, 440, 450, 520, 530, 540 and 550 : Electronics
![Garmin 010-00516-24 GPSMAP 420s GPS receiver, 12 channel Receiver, without transducer, LCD 240 x 320 Resolution, 4" Diagonal Size, Color Support, 45 sec Cold, 15 sec Warm, Built-in Antenna, 1500 Waypoints, 20 Tracks, 10000 Tracklog Points, 20 Routes, Garmin 010-00516-24 GPSMAP 420s GPS receiver, 12 channel Receiver, without transducer, LCD 240 x 320 Resolution, 4" Diagonal Size, Color Support, 45 sec Cold, 15 sec Warm, Built-in Antenna, 1500 Waypoints, 20 Tracks, 10000 Tracklog Points, 20 Routes,](http://salestores.com/stores/images/images_747/0100051624.jpg)