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Use this in all my 4k cameras some are,12 megapixel cameras, and works like a dream! Writing at 12-16mbps locally for recorded events, and to my NVR over the net. My cameras are setup to record on motion, not 24x7x365 for whatever it's worth with this product in how its being used.
This pack of sd cards is a very good value and seem to work well so far. I have ordered sd cards from Amazon in the past that kept unmounting themselves and didn't store to specified capacity. These state the correct specified capacity and I've had no problems with them so far, but only have been using for about a month now.