Excerpt: This is used in a quadcoptor for storage of video. It works well for the storage and the adapter works well in the reader too. It feels a little delicate over some memory but I've had no problems with them so far
Summary: I bought this to replace a 4 GB card in my cell phone ( LG 840 ). The 4GB card (class 2) took almost 90 mins to load 3.7GB of data, the new card did the same data in less than 15 mins. Bringing up items on the phone is also much faster.