Car stereo
(180 mm × 100 mm or 7.09 in × 3.94 in) and offers more features than a single-DIN unit. Now a days most of the double din stereo comes with a larger display (7 to 10 inches) that allows users to easily see and navigate the menus, make selections, and access various audio sources. These units often include built-in CD/DVD players, GPS navigation systems, Bluetooth connectivity, and even hands-free calling.