Specification:Capacity     256GBStandard     SD 5.1Dimensions (LxWxH)     15 x 11 x 1mmWeight     0.25gWorking Voltage     2.7V-3.6VR/W Performance     up to 100MB / 25MB per sec*Read / Write speed based on ADATA internal testing , actual performance may varySpeed Class     UHS Speed: Class 1Speed Class: Class 10Video Speed Class: V10Compatibility     Smartphones / Tablets / Dash RecordersOperating Temperature     -25°C – 85°CCertifications     FCC , CE , VCCI , CTICK , EACWarranty     Lifetime