How about iPhone sound for two? Buy our SmartShare with Headphone Adapter and save!

Griffin Headphone Adapter for iPhone lets the headphones you already own fit in the special headphone jack of your Apple iPhone.

Specially designed 1/8" (3.5mm) stereo-mini plug fits the recess around the audio port on your iPhone. Can also be used to connect oversized headphone plugs to iPod in cases with a small headphone opening.