 "SanDisk 64GB Class 4 SDXC Flash Memory Card- SDSDB-064G-B35 (Label May Change)" "Accessories | Ultimate Camera Shop"
"64GB Sandisk SDXC 9-pin Class 4 min 15 MB/s Read and 4 MB/s Write speeds 2.7V to 3.3V voltage support 24mm x 32mm x 2.1mm SDHC Secure Digital High Capacity Card for digital cameras, video cameras, media players, and other flash devices" 
 "Transcend Ultimate - flash memory card 64 GB SDXC UHS-I" " Transcend UHS-I TS64GSDXC10U1 Flash Memory Cards CDW.com
"For professionals working with today's cutting-edge photography and video equipment, Transcend's Class 10 SDXC UHS-I cards provide an incredible level of performance and vast storage capacity to meet the demands of high-resolution image capture and full HD video recording. Additionally, the top-tier MLC NAND flash chips inside provide consistent long-life durability and endurance." 