NOS Disk Extreme 64 GB SD SDXC Class 10 up to 35 MB/s Memory Card, 64 GB SD SDXC Card Class 10 Great for High Performance DSLRs and HD Camcorders Professional speed for capturing more shots in continuous burst mode Enhanced performance with Power Core controller technology engineered to distribute data rapidly and efficiently 1 Yr Warranty Time Warranty Extreme Speed 35 MB/s