The BOSE SoundTouch Wireless Link is a sleek black adapter that allows you to transform your speakers into a wireless music system. With Bluetooth and Wi-Fi connectivity options, you can stream any music from your home network or Bluetooth device. This brand new unit supports optical, 3.5mm, and RCA connections, making it versatile for various speaker setups. Plus, with free shipping included, it's a convenient and high-quality addition to your home audio system.