Main Feature Capacity 64 GB Flash Type 3D NAND flash Read Speed 100 MB/s Write Speed 20MB/s Operating Temperature -25°C (-13°F) ~ 85°C (185°F) Operating Voltage 2.7V ~ 3.6V Physical Attribute Dimension 11 mm x 15 mm x 1 mm (0.43" x 0.59" x 0.04") Weight 0.4 g (0.01 oz) Manufacture Warranty Warranty 05-year warranty