The HM100 camera's firmware originally only was able to use class 6 cards, Now, thanks to the firmware upgrades, Chris and the team can use class 10 cards, they are currently using 32GB SD cards, which will allow them to record up to nearly 2 hours of footage, compared to the 27mins of footage the old cards would hold.
Chris and the team upload all The Geek Group videos to their YouTube channel
here, Why not check it out? You can also visit their website
here, you can also become a member of their forums, we would love to see you in there.
Cheers,
Thermo