Southern Telecom Tower Bluetooth Wireless Speaker, Features Digital Volume Control, Programmable FM Radio Tuner with Voice Prompts for Channels, USB Charging Function & Aux In Jack 3.5 mm, DC External Power Supply Build-in Bluetooth function can stream music from hundreds Bluetooth enabled devices Built-In High powered speaker system with 10M effective range Aux In Jack 3.5 mm for MP3 etc USB charging function (5V/2.1A), and DC external power supply Programmable FM radio tuner with voice prompts for channels LED light with on/off switcher without affecting listening to music