Well I finished the recon helm last night just have to find a permanent vizor for it now this one is just a tester.
Inside I have a mic and external speakers with a amp (the orange golfballs will be painted lol they are my speaker enclosures). Along with the usual cooling fan I have a status light to let me know whats turned on and a mp3 jack on the lower edge of the helm for tunes or sound files through the external speakers.
Cheers!