This simple little kit contains a small mic and receiver that makes your iPhone into a recording power house. So far I have tried recording a voiceover, a singing vocal performance, an acoustic guitar, and a violin for my YouTube channel and it works much better than expected for the price. The really great thing is that you don't have to install a special app or use your phone's bluetooth connection to make it work. Once plugged in it works with any app that records audio. This include's Apple's GarageBand and iMovie apps as well as the regular old camera app. This makes for a much more capable setup. No bluetooth means no need to pair it with your phone, you just plug the little dangle it comes with into the bottom of your phone and you're good to go. I love the simplicity and elegance of this setup where other products were so complicated that they usually spent most of their life in a drawer.