The Panasonic HC-WX970 supports an SDXC memory card which is better than most big sensor size video cameras that have been available for more than a year. Most camcorders of a comparable age and type to it support an SDHC 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).
An SDXC memory card is actually the best supported memory card type amongst all camcorders of this age and type.
Amongst similar types of video camera the worst supported memory card type is SD.
SDHC cards are DS cards with a higher capacity of up to 32GB.