If you want a mid stream thumb drive go with this one it works just as it states it will, fast with both reading and writing.

I used it for more than 4 months and found no issue with write speed and reading speed. it works charmly and i love it.
Finally worth for the cost i spent.

Easy To Set Up; Easy To Use; Fast; High Capacity; Portable; Reliable

SanDisk's latest USB flash drive includes OTG capabilities for Android. Read on as we take a close look at the Ultra Dual Drive.

Rapid delivery of this SD card. Well packaged, and does all that I expected, with robust and well made feel.

It does whats needed Very well.!!

Have to upgrade some 4 GB old compact flash digital controllers backup modules and this was the best available solution.

Why would you need a compact flash card? Most devices as far as I am aware tend to use SD cards are micro SD cards for their memory needs, and the Compact Flash Card may seem slightly large and cumbersome in comparison making you wonder why on earth would you use that?

Fast; decent memory; durable

Faster models available