Premier SDHC UHS-I U1 Class10 The Premier series SDHC memory cards are especially designed for digital camera users. They are compliant with SD 3.0 specification (Ultra High Speed 1, UHS-I), and backwards compatible with SD 2.0 specification devices. This series 32GB memory card, read/write speeds are as high as 50/33 MB/sec, providing you with higher performance, high reliability and outstanding durability. The Premier Series SDHC class 10 memory cards are the best choice for users who want to upgrade to the UHS-I U1 specification, with price points comparable to older class 10 cards. For the same price 32GB card, you can enjoy the latest SD 3.0 specification, with read/write speeds of up to 50/33 MB/sec, and random read and write IOPS are 1300 and 100. Data stored on Premier card benefits from added protective features, including: X-ray proof construction, resistance to extreme temperatures, error correcting code (ECC) and write-switch protection functions. Capacity 8GB/16GB/32GB Dimensions (LxWxH) 24mm x 32mm x 2.1mm (0.94 x 1.26 x 0.08 in) Weight Approx 2g (4.41×10-3 lb) Device compatibility DSLR, Full HD Camcorder, Digital Camera Operating voltage 2.7~3.6V Certifications FCC , CE , BSMI , VCCI Warranty Life-time warranty