Zectron UHS-1 64GB SDXC Micro Class 10 Memory Card for Samsung Galaxy Tab 3 10.1 P5210 64GB Class 10 Ultra High Speed UHS-1 SDXC microMemory Card Life time warranty Data is not lost when power is turned off Latest Technologies; Future Proof and Compatable both with SDHC, and USB 3 Devices , with Write Speed Over 55MB/s. Read Speed: 25MB's All Cards shipped with Tracking Number for a trouble free serivice normaly 2 days to 98 % of all American states, including Alaska, Hawaii and Canada