Tested this out with inbuilt card reader of a laptop, around 10mbs write and 20mbs read, not the 30/30 stated but better than usb flash drives

Used 2 separate mini SD cards on my Samsung mobile and tablet,but could equally have been great on a camera- making its memory huge and fast (for photos/ video clips and files for home and work which I need when no wifi) unlike apple products which are inflexible in this way.

Awesome Speed Capacity; Great Features; Great Picture Quality

None

The 128 gb MicroSD card will probably work OK in cameras that support the SDXC standard, but I reformatted mine to Fat32 and carry about 75 gb of data on each card as backups that can be carried in an ordinary wallet.

Can Be Carried In Wallets; Extreme Small Size

Not For Computer Backups

Memory cards are arguably the best thing to happen to us since slice bread. Most smartphone use them and so do digital camera. You can use them to transfer media from one device to another and most devices that support memory cards today either have SD or microSD slots.

Very fast delivery...

The price is amazingly friendly. I got this specifically for my Lumia 625 since i have the windows phone 8.1 Developer preview installed and it allows app installs on the microsd card of class 10. This was the perfect choice for me. Copying speed is amazingly fast.

I have it for my camera, back up for the original one, it's really fast and look faster than the original, working good until now, no any issue and...

Fast; reliable and easy to use

None

Beware - the micro SD shown here is UHS 1 with U1 symbol, but I was shipped a C10, I have raised a compliant with infibeam - haven't been resolved yet.

THIS IS THE BEST MEMORY CARD I EVER BOUGHT I GOT IT DELIVERED WITHIN 60HOURS OF PLACING ORDER EXPRESS DELIVERY AND EASY PAYMENTS PACKING WAS VERY NICE DATA TRANSFER UPTO 4.2MBPS FINALY ITS A VALUE FOE MONEY PRODUCT

Great brand. Great price. Just what the phone needed no formatting no compatibility issues just insert ant go. Would not buy any other and at this price wouldn't buy from anywhere else