The most comprehensive, instructional, training DVD to teach you all the features & functions & HOW TO USE your unit. This step-by-step training DVD walks you through the key features of the unit and gets you up and running in no time. Learn everything you need to know to begin using your new radar, from using radar, navigating, echo, clutter, gain, range, controls, sense. plotting, danger zones, waypoints to mapping fishing areas and setting up routes.This product is manufactured on demand using DVD-R recordable media. Amazon.com"s standard return policy will apply.