The Thomson DS120CD audio system is packed with design features. You can connect a 3.5 mm jack cable (included) to the AUX input, or connect a USB flash drive or wirelessly via Bluetooth to play your favorite music. There is one USB port for playback and another USB port for charging, such as a smartphone. This system is even equipped with an SD card reader. If you have music on a CD, no problem, there is a built-in CD player. The system also includes an FM radio option with 20 presets for your favorite stations. The LED display shows the time and you can also set the alarm from CD, USB, or radio. The SLEEP function sets the auto power off after a certain time (10-90 minutes) and you can sleep peacefully while playing music.