So my requirements are:
Helmet mounted camera - need to be able to move it to different helmets, so be able to buy at least 2 spare mounts
Decent battery life - not sure if this exists, as often out for 3-4 hours and then would need to be able to either fit another battery or recharge quickly in case of having to go out again
Loop recording - not interested in posting footage, just want to record and have footage if something happens.
Preferably a bullet type camera so I don't look like a tele tubby, well not from the helmet anyway

So not sure if such a camera exists, but my requirements don't seem to over the top
