Specification:Capacity128GBStandardSD 4.0Dimensions (LxWxH)24 x 32 x 2.1mmWeight2gWorking Voltage2.7V-3.6VR/W Performanceup to 290MB/260MB per sec (64GB/128GB), 275/155MB per sec (256GB)*Read/write speed based on ADATA internal testing, actual performance may vary. Max speeds only when paired with UHS-II compatible device Speed ClassUHS-II U3 Class 10CompatibilityDSLR / Full HD camcorders / 3D full HD camcordersOperating Temperature-25°C to 85°CCertificationsFCC , CE , VCCI , CTICK , EACWarrantyLifetime