I use a Sony Digital DCR HC42 with a helmet cam hook-up, battery, all the wires, etc.... A real PITA - but the video footage I bring away is great to work with. eBay is where to start .... type in 'helmet cam'
I'd like to find out more about that POV1. I've got a post (click here) about my set up in detail and you can always check out my videos ..... link is posted below.
I just got the POV 1.. It rocks. Smooth video and the sound is ok if not exposed to wind. he he, ie wear under clothing and the sound is not to bad... Hope that helps.