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Premier Pro microSDHC memory cards are the industry’s fastest, implementing the latest SDA 3.0 specification, Ultra High Speed 1 (UHS-I). They are especially suitable for users of smartphones and tablet computers. In multi-tasking operation, the read/write speeds reach 45/40 MB/second, with number of operations reaching 1400/150 (operations per second). This means that running several applications at the same time will not impede the device performance.