2-DIN HD Source Units, found in most newer vehicles on the road today.
When space is tight and found on older vehicles with only 1-Din openings.
Full motorized flip out Touchscreens, taking only 1-DIN but still have the large monitor solution.
NO built-in DVD/CD Players; Benefits like shallow chassis, overall lightweight, bigger screen options.
NO screen option; When you are looking for a standard head unit.