The Subaru Navigation System Original Compact Discs are genuine replacement discs for Subaru vehicles, specifically designed by the manufacturer. The product features two compact discs out of the original three included in the set. These discs are essential for maintaining the functionality of the in-car navigation system, providing accurate GPS and map data for a seamless driving experience. Designed by Subaru, these compact discs ensure compatibility and reliability with their vehicles, making them a crucial accessory for any Subaru owner. Disc B missing.