PNY says that the memory card is capable of a minimum write speed of 10MB/s (Class 10), with transfer speeds of up to 104MB/s (UHS-1), sustained writing speeds of at least 30MB/s (U3), and finally ...

The categories of SD flash memory cards for recording video. The three class types are Speed, UHS Speed and Video Speed. Devices that support any of the UHS buses also support the earlier Default ...