Capacity 16GB / 32GB / 64GB / 128GB / 256GB Standard SD 5.1 Dimensions (LxWxH) 15 x 11 x 1mm Weight 0.25g Working Voltage 2.7V-3.6V R/W performance up to 100MB / 25MB per sec *Read / Write speed based on ADATA internal testing , actual performance may vary Speed class UHS Speed: Class 1 Speed Class: Class 10 Video Speed Class: V10 Compatibility Smartphones / Tablets / Dash Recorders Operating Temperature -25°C - 85°C Certifications FCC , CE , VCCI Warranty Lifetime