Today, I would like to review a set of earbuds for you guys called the "X10i" by Klipsch Audio. These earbuds are designed to work seamlessly with the iPhone 4 and 3GS with the integrated apple chip. The functionality may be hindered with other cell phones but rest assured they will work flawlessly with your new iPhone. Let me start off by saying these earbuds are shockingly light weight and are on par with the smaller earbuds on the market. I can't stress enough how light these are, it's almost unreal. They were designed to be as light as possible to put less pressure on your ear canal. The shape and design of the earbud allows it to adjust to the center of your ear canal which makes for a perfect fit. This design along with the oval shaped ear tips make them extremely comfortable to wear for long listening sessions. I was not able to test them out while exercising or running but I don't foresee any issues with them falling out. There is a 3 button mic integrated on the wire at the point where the 2 earbud wires meet (called the yoke). It works flawlessly with my iPhone 4S and no issues with the mic were experienced. Users on the other end of a phone call had no issues hearing me. Since these are high end earbuds, it is recommended to listen to your music in apple lossless format. If you are not listening to music ripped from this format, you may not be using the earbuds to their fullest extent but nevertheless, their sound is out of this world. As for the review of the sound quality of these, it is immediately noticeable how crystal clear the mids and highs are. Every detail is very articulated and sharp. The lows are not over-powering but are present at just the right level. Under high volumes, they do not waiver at all and will easily take on the abuse if that's what you like. The sound is very well rounded and the highs/mids/lows are in perfect balance The X10i comes with a 2 year warranty, a protective carrying pouch, 5 pairs of different sized ear tips, an ear tip wax cleaning tool, an airplane adapter, a 1/4 inch jack adapter and a clothing clip. The MSRP on these is $349.99 and they are available at Klipsch.com and authorized retailers.