Transcend 64GB Micro SD UHS-I U1 Memory Card with Adapter

Main Feature Capacity 64 GB Flash Type 3D NAND flash Read Speed 95 MB/s Write Speed 45 MB/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)