Strontium NITRO UHS-1 UHS 1 64GB 566X 85MB/sSD card SRN64GSDU1 SRN64GSDU1 - 64GB-566X UHS1 85MB/s Maximizes the UHS-I technology for outstanding NITRO performance, including 85MB/s (566X) minimum guaranteed read transfer speed* Extreme high-speed, Class 10 SD card meets the daily requirements of expert photographers and videographers Superior in fast continuous shooting and capturing extended durations of 1080p HD or 3D video