BluSound delivers wireless Bluetooth crystal clear sound from your audio device in a small rechargeable battery powered speaker; perfect for indoors and out. Take it anywhere for great sound from the ultimate portable speaker. Connects wirelessly via Bluetooth or wired via 3.5 mm or 2.5mm audio cable. Built-in rechargeable lithium ion battery charges in less than 3 hours and lasts 2.5 hours at normal usage levels. There are SD and USB ports located on the back to allow you to access music from other media. As an added feature, this device also includes an Aux Out jack, allowing you to turn the BluSound into a Bluetooth receiver to use at home, in the car, or from any device that has a 3.5mm jack. Includes a USB charging cable.