256 GB , Type SD , Read speed 300 MB/s , Write speed 260 MB/s , UHS Speed Class Class 3 (U3) , Video Speed Class V90 , Flash memory class Class 10 , Colour Black , Operating temperature (T-T) -25 - 85 °C , Width 31.75 mm , Depth 23.88 mm , Height 2.03 mm , Weight 2.31 g