The Canon Legria HF R706 supports an SDXC memory card which is better than the SDHC memory card supported by most new similar spec video cameras. In addition, this Canon camcorder 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).
An SDXC memory card is actually the best supported memory card type amongst all recently released small sensor size camcorders.
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.