Core functionality is what these two headsets have in common. Both include stereo speakers—one per ear—and a microphone so that you can make phone calls with an iPhone, and use voice input-ready apps with any iOS device. They’re also both designed to be portable: the corded Zion earpieces can be wrapped up and stuck inside an included canvas carrying pouch, while Mobiband goes beyond the aforementioned Sportsband by folding up for…
