Genuine SanDisk Video HD SDHC Memory Card - 4GB (Class 10)

Pros: I think it's a genuine product. It looks like one.
I did some tests using SKU 6858 and CrystalDiskMark and it reaches 20MB/s reading speed and 19MB/s writing speed. I can´t get 30MB/s, but it is a class 10 since the minimum speed of this class is 10MB/s.

Cons: Product: None I can find yet. However the black paper box arrived torn and "fixed" using plastic tape.

Other: I think it's a genuine product. It looks like one.
It reaches 20MB/s reading speed and 19MB/s writing speed. I can´t get 30MB/s, but it is a class 10.

Pros: It’s a very nice piece. Looks like they spent a lot of time to make it. I like to have quality products and this is one of them. It’s a genuine sandisk memory.

Cons: I bought it for my new camera which is a full HD. I didn’t see any difference between classes 4 to class 10. So if you buy it just for that then you can stay with the class 4 SD. ( half the price)

Other: when dealing with data transfer , then i am sure there will be a difference..