HELL HELP Sandisk 32GB Extreme 30MB/s testing slow??

I recently got a new SanDisk Ultra Class 10 Micro SDHC UHS-I. Just to verify if it is genuine, I have the following result. Could anyone tell me if the read and write speeds are as per the card’s specifications ? Also the maximum storage available is 29.7GB. Thanks

Test finished without errors.
You can now delete the test files *.h2w or verify them again.
Writing speed: 12.4 MByte/s
Reading speed: 27.1 MByte/s
H2testw v1.4