The Bose Wave Music System 3-Disc Multi-CD Changer Accessory in black is a CD player unit designed for the Bose Wave Music series. It has a 3-disc CD changer capacity and RCA audio inputs. This accessory is designed for enhancing the functionality of the Wave Radio product line by providing a convenient and easy way to access and listen to multiple CDs. Made in China, this unit is a reliable and high-quality addition to any home audio system, especially for those looking to expand their CD collection and listening capabilities.