I've been using my iphone religiously for music, mainly pandora and I was getting tired of always being on headphones or on the crappy iphone speaker (which actually isn't that crappy but when juxtaposed up against this beast from O.T. it is!).
The sound is fantastic (that lil' woofer gets busy SON!!!), the sound is clean & balanced...plus taking or making calls is great and no problem; the microphone works really well and so far nobody has said they can't hear me or responded with a say again/what the hell did you just say retort.
I've played it for 3 1/2 hours straight so the charge is legit, if you are the kid that brought the boom box to the playground or even before that was reppin' Pocket Rockers this is the item for you!