The Challenge Action supports an SDHC memory card which is better than most camcorders of a similar age and type to it. Most medium sensor size video cameras that have been on the market for around the same time as it support an SD memory card. SDHC cards are DS cards with a higher capacity of up to 32GB. The best memory card type of all video cameras of a comparable age and type to the Challenge Action is SDXC and the worst is MicroSDXC.
SDHC cards are DS cards with a higher capacity of up to 32GB.