Come to around 23MB / s write and read to just 83MB / s.
That's just when reading, really a top value in this price range and you can charge the 10-20 to brand cards easy save ...
In order to describe the complete map (59GB) in about 40min and reads the entire contents in under a quarter of an hour ~ 13min (see h2testw Screenshot)
However, the information on the package are definitely confusing, front: "up to 50MB / s transfer speed" back: "70MB / s max.Read" & "40MB / s max.Write"
-The Specified writing speed keeps the card so no one (but was in sight at the price).
However -The 50 or 70MB / s in read it proposes clear.
Personally, I can recommend the card for full course and all who is higher write speed required but must engage much deeper into their pockets.