Micro SDHC...90MB/s good for 4K Video

Just ordered this SD card from 7Dayshop.com

Toshiba Exceria Micro SDHC Memory
Card UHS-1 U3 90MB/s 32GB

Any one used one of these before?

Not I… specs look fine though?

It’s a Class 3 card it will be fine. At 32gb, 4K 24/30fps you will have around 40mins capture time.

Is it not around 1.2hrs for mavics 60mb bit rate?