Wireless clip-on microphone

Is there a wireless clip-on microphone that will work with the MacBook Air? Something light and unobtrusive that can be clipped onto the shirt on myself and another person in for an interview type video or podcast. The quality on my wired NOCS iPhone headphones picks up good quality sound from the human voice but only works for one person at a time and it is quite light as well. I'd like to do two people and figure a wireless would be unobtrusive.