64 GB SDXC Class 10 Class 3 (U3) V30 170 MB/s Shock resistant, Waterproof, X-ray proof Black Improve your workflow efficiencyWith SanDisk® QuickFlowTechnology7, this card optimizes performance for timesaving media offloads with quick transfer speeds up to 200MB/s6 (64GB - 1TB). Pair with the SanDisk® Professional PRO-READER SD and microSDto achieve maximum speeds (sold separately).Shot speeds up to 140MB/sWith shot speeds up to 140MB/s6 the card is perfect for capturing the action as it happens, without missing a beat.Perfect for 4K UHD videoSometimes speed is what you need. The SanDisk Extreme PRO® SDUHS-I card delivers the performance to capture stunning, uninterrupted 4K UHD video1.Stunning sequential burst mode shotsRated UHS Speed Class 3 (U3) and Video Speed Class 30 (V30)2, the SanDisk Extreme PRO® SDUHS-I card lets you capture sequential burst mode shots without missing a beat.Durability you can count onBuilt for and tested in harsh conditions3, the SanDisk Extreme PRO®