Toshiba 128gb exceria m301 microsd card key features up to 128gb storage space uhs speed class speed class 1 u1 max read speed mbs 48 mbs small device full hd a toshiba exceria microsd card is the card you need if you want to record full hd videos on your smartphone tablet or sports camera specifications capacity 128 gb interface sdhcsdxc uhs i uhs speed class speed class 1 u1 max read speed mbs 48 mbs dimensions 15 mm l x 11 mm w x 10 mm h weight approx