To support the demanding performance and storage space needed to capture smooth full hd 3d and 4k videos transcends sdxc uhs i u3 cards offer maximum speeds of 95mbs read and 60mbs write as well as extra large capacity of up to 128gb in uhs i compliant cameras uhs i speed class 3 u3 cards are capable of recording video at a minimum constant write speed of 30mbs features mlc flash based performance and reliability smooth full hd 3d and 4k video recording performance su