The Aiwa CSD-FD83 is a portable audio system featuring a powerful 140W proprietary Digital Pure Sound (DPS) audio technology, delivering clear and accurate sound output. It has Bluetooth connectivity, allowing for wireless music streaming from smartphones, tablets, and other compatible devices. The audio system also has a built-in FM radio tuner and comes with a USB port for playback of MP3, WMA, and WAV audio files. Additionally, the CSD-FD83 has an SD card slot, allowing for playback of audio files stored on SD and SDHC cards. Its compact design and rechargeable battery make it a versatile audio solution for on-the-go listening experiences.