Listen the result with headset, the sound is incredible !!!
And, the bonus is, the wind immunity is very good. :-)
For adapt to Gopro, you need one mini usb 10 pin connector (easy to find it on the web, carefull take a short one, you can find 2 models long and short ) and one resitor who will commut for external microphone ( you don't need 1/8 watts, like on this picture, one cms is enough )
And, because you will ask me for the steadycam ? You can find it here : http://www.feiyu-tech.com/G4-en.php :-)
This one is expensive, but the result is : Incroyable, how we say in french ;-)
Your credit card will be burn, (with the steadycam) but you will be able to make some realy pro vidéos.
Thanks again to this OpenProject