can you control volume in left and right ear piece ?

If you mean control volume in left and right ear piece separately, the answer is no. The volume button controls both ear pieces at the same time. Hope this helps.

will this function with an iPhone?

According to the VERY FIRST LINE of the product description, yes, it does: "Specifically engineered for mobile devices, the Klipsch S3m headphones give you a front stage pass to your music collection whether you are an Apple®, Android™, Windows® or BlackBerry® user."

Questions & Answers: Klipsch S3M In-Ear Headphones (White)

(26)

double click image to zoom in

Shop All Klipsch Products

Klipsch S3M In-Ear Headphones (White)

Single-button remote and mic which gives you total control of both your playlist and phone calls on virtually all of your mobile devices
Customized 5.8mm moving-coil driver to deliver smooth, full-bodied sound
Utilizes the unique Klipsch oval ear tip design making them virtually impossible to feel and perfect for long-term wear
Durable, tangle resistant cables to alleviate the anguish of unkinking a clump of wires
Connectivity Technology: Wired

Out of Stock