How many minutes of hi-res recording?

For the 'ShinyShack' competition:
Question: At highest resolution, approximately how many minutes of helmet cam recording time will you get with an ATC2000 2Gb card?

a) 20
60
c) 180


Intuitively, I'd say a), but I've never owned one of these, so it would be an educated guess.

Does anyone know the answer?

 

B.

 

Is that a guess?

 

No

 

At the highest res you'll get an hour, next nearly two, bottom res I think its just over four.

Then you can double each one with lower frames per sec. But its a bit jittery

 

if you search the net you can find a user manual with the answer in , thats what i did a week or so back cant remember now what it was.

 

Thank you most kindly.