SuperSonic Wireless SoundBox - Toughneck Portable Audio System, Blue (IQ-2400 Blue) Portable wireless Audio system. Speaker deliver clear crisp sound. LED display Built-in 2.1 BT compatible allows you to wirelessly connect to BT enabled devices. Built-in USB input. Built-in Micro SD card Reader. Built-in recorder While it works flawlessly with any compatible stereo BT device, the speaker also allows for a wired Connection via its 3.5mm aux-in port for other portable devices without BT connectivity Karaoke function with one microphone input. FM radio Shoulder strap included. Full function remote control. Complete portability allows you to use your unit indoors & outdoors