I'm interested in getting a microphone for my wife. She's addicted to recording karaoke on her phone. So I'm looking for a headphone that would have great microphone quality, but with a single jack so that it works on her phone (S3).   Suggestions would be appreciated. Budget is roughly 300...

I'm getting tired of buying new iPhone headphones from Apple every 6 months because they're so flimsy. So I'm looking to get a full size headphone to use with the iPhone.   Must have features: Microphone Reasonably comfortable Answer/Pause button Closed back (I commute, so don't want...