Designed to compete with Monster's iSoniTalk and Shure's MPA-3c Music Phone Adapter, Griffin's new SmartTalk ($20) adds an iPhone-ready microphone and control button to any pair of iPod-compatible headphones. Both components are found inside a black plastic nub that's at the end of a 30-inch black fabric cable, with a plastic headphone plug that fits right into the iPhone's recessed headphone port. A clip on the back attaches to your shirt.
