How to Buy an SD Card: Speed Classes, Sizes

1. Speed , Class

Speed Class designates minimum writing performance to record video. The Speed Classes defined by the SD Association are Class 2, 4, 6 and 10.

How to Buy an SD Card: Speed Classes, Sizes

class10 10MB/s High Speed        Full HD Video Recording HD Still Image Continuous Shooting
class6 6MB/s Normal Speed  HD and Full HD Video Recording
class4 4MB/s   Normal Speed
class2 2MB/s Normal Speed                 Standard Video Recording

UHS (Ultra High Speed), the fastest performance category available today.

How to Buy an SD Card: Speed Classes, Sizes

UHS Speed Class  Class 3 4K2K Video Recording

UHS Speed     Class    1 10MB/s

There are four different speed classes — 10, 6, 4, and 2. 10 is the fastest, while 2 is the slowest. Class 2 is suitable for standard definition video recording, while classes 4 and 6 are suitable for high-definition video recording. Class 10 is suitable for full HD video recording .

2. size

Now avaialable 120Gb sdcards first check your mobile or tablet requires max sd capacity then buy .