Good iphone boombox/speaker for outdoors/beach

Hi,

I searched the previous posts couldn't find anything exactly like what I am asking. Does anyone have any suggestions for a good product like a boombox or speaker dock for my iphone. I want to have some music when I go to the beach/ or am outdoors. Something that will put out good quality sound and is loud enough to reach an area like a backyard. Any suggestions?

I have the old apple HIFI that i found in a dumpster and put back together. I love it. I recommend it because the sound that it produces is amazing for what it is. Amazon.com: Apple Hi-Fi Home Stereo for iPod (White): MP3 Players & Accessories
It is expensive but it sounds like you are at a concert when you listen to it. highly recommended.