Actually their is an EXTREME version but the price is about double and since I am not planning to shoot in 2.7 or 4K their was no need to pay more and get no improvement. Grabbed 2 of these, one for my father for his Great for my GoPro HERO 3+ Black Edition and both cards worked as expected. Works great with 1080p @ 60FPS in the GoPro and I imagine it probably would work for 2.7 and maybe it would work with 4K but again not bought with that intent so these perfectly suit our needs.