http://www.amazon.com/Photive-Portable-Bluetooth-Speakerphone-Rechargeable/dp/B00D6OHHRG/ is pretty good for how cheap it is. The only flaw with it, the USB charging port is kind of flimsy so I wouldn't recommend if it was unplugged/plugged too often. Great sound, holds a long enough charge for a 4-5 hour barbecue, and even has a microphone so you can Siri or take a call (incoming calls override the music).