The HMDX Stream Wireless Speaker has BIG sound, is prefect for home, at work or on the go; it has enhanced bass for p[premium sound quality, a line in for playing via non Bluetooth devices, works up to 30 feet away from your device and has inbuilt-in speakerphone so that you can still tame those important calls while jamming to your favourite tunes.Includes a slot to hold most devices and work via battery (4 x AA not included) or via the mains