The JVC GY-HM70 supports an SDXC memory card which is better than the SDHC memory card supported by most video cameras of this age and type. This video camera also supports an SD memory card. SDXC cards are SD cards but with a much higher capacity and faster processing speeds. They have a maximum capacity of 2TB (Terabytes).
This video camera's memory card type (SDXC) is in fact the best supported memory card type amongst all comparable spec video cameras that have been on the market for more than two years.
Amongst similar types of video camera the worst supported memory card type is MS Pro-HG.
SDHC cards are DS cards with a higher capacity of up to 32GB.