I bought this Veho 360bt speaker on Ebay for $30. It connects to your a2dp compatible Bluetooth device such as a phone, tablet, or pc just as any wireless headset but it produces nice loud audio perfect for playing music at remote locations such as the beach or picnic. It also features a standard 3.5 audio jack for non-Bluetooth devices. It is powered by a lithium battery that lasts 4 hours and charges through usb. I recommend picking one of these up at your first most convenience.