PNY Professional X 64 GB High Speed SDXC CL10 UHS-1 Rated Flash Memory (P-SDX64U1-30-GE) Ideal for SDXC capable Ultrabooks, Hi-Megapixel cameras, DSLRs and HD video recorders Class 10 rating, UHS-1 Speed Class; Great for action photography, burst mode shooting and recording hours of HD video 35MB/s write speed, 50MB/s read speed; UHS-1 speed class for higher performance Waterproof, Temperature Proof, Shock Proof, Magnet Proof Lifetime Warranty