The screw under the SD card ....

This CnMemory SD card is disappointing. Allegedly, according to the product description SLC memory chips (more reliable and more expensive than MLC) with high-speed (133x) have been used. Far from it: The important writing speed, languishes at about 5MB / sec around; which is very slow. The read speed, which is not a big differentiator in SD cards now more, is like so many at about 17MB / sec (Benchmark: H2testw 1.4).
It should be noted that the card actually delivered visually and in the labeling on the card and packaging of the product description given here at Amazon clearly different. The details: SLC, High Speed, First Class, and 133x are no longer present on the card delivered me. It takes only a delicate print on the packaging Read Speed: Up to 20MB / s.
If the manufacturer has apparently slimmed down considerably its product in performance, this should be also be reflected on the product page here at Amazon.com.
I can not tell you much about the reliability. At least the card has about 10 test runs (describe 2GB, read, delete) with the tool H2testw survived without damage. Although not fast, maybe the map's least durable ....