Delivers the speed and capacity you need to capture 4k ultra hd video up to 60 mbs write speeds for faster shot to shot performance and up to 90 mbs for faster transfer high sd card video recording performance with both class 10 and uhs speed class 3 u3 ratings for capturing full hd and 4k ultra hd 3840 x 2160p video available in 16 gb to 64 gb capacities for longer video shoots and uninterrupted photo sessions built for and tested in harsh conditions temperature proof waterproof shock