Professional Kingston 8GB MicroSDHC Card for Nokia Lumia 521 Smartphone with custom formatting and Standard SD Acapter. (Class 4) This is designed by Kingston to fit your Nokia Lumia 521's for complete compatability! Now you can quickly share your content collections with friends, family and colleagues at bigger capacities. Kingston's removable storage solution is focused and specifically designed for mobile phones with expansion slots. This cards ultra-small size consumes very little power from your handset, to give you longer battery life even with higher capacity. Now you can instantly move information between other phones, computers, tablets, notebooks, printers, other Secure Digital media devices.