With this accessory
you can offer a more secured fixation to your Rode i-XY microphone onto your 30-Pin iPhone 4, 4S...
We can read here or there
The RØDE iClamp is a heavy-duty clamp designed to provide additional support for your i-XY stereo microphone (30-pin version) during high movement usage with an iPhone 4 or iPhone 4S.
Please note that the iClamp is not compatible with the Lightning version of the i-XY.