Ivor Petrie "Ivor the Engineer"
I purchased this card for use in my helmet mounted video camera. All memory cards are NOT the same and as correctly stated by a previous reviewer even cards rated the same Class number don't perform the same. This card performs well in sub-zero temperatures when catching ski-ing action and also high speed flying action in Southern CA in very high temperatures in a black camera. I did not measure the actual data speed, but it captured 1080p HD 30fps video from my camera without any issues.Overall this card is good value, performs well and I would recommend it.