We've all been there, lying in our bikinis thinking, "Why on earth can't I wirelessly transmit the sexy songs I'm listening to to my super sexy friends?" This common dilemma provoked Aerielle to launch the i2i Stream, a lightweight matchbox that can "send or receive CD quality sound up to 30 feet wirelessly." The idea is that you can DJ for a whole group of your friends, then pass the job to someone else who can then return the favor.

It's a cool idea, though we wonder exactly how many friends we can broadcast to at once, and if there's any pairing involved. It's not iPod specific—just a 3.5mm jack for anything you want to connect (plus another one so you can hear the tuneage yourself). But there may be limits. Since it uses 2.4GHz RF, it could have a latency issue (particularly if it's using a Bluetooth variant), so sharing the audio of a video player could be out of the question.
Its got a rechargeable battery inside that provides 5 to 7 hours of battery life. You charge the thing via USB, which I think is weird considering this isn't a PC accessory, but Aerielle promises to sell a wall charger too. (You can probably use your BlackBerry or Motorola charger, since it's all the same jack.)

It's $70 for one or $120 for a pair—an ideal situation for me since my hot friend happens to be my wife, and yes dear, it's you and only you. Aerielle will also release $10 Stream Skins molded cases available in blue, green, pink, silver and clear, in case all of your super hot friends are equally super worried about, you know, color coordination and stuff.

Source- http://gizmodo.com/336668/aerielles-i2i-hangs-from-neck-shares-music-with-your-hot-friends