Micro sd card micro sdxc card memory size 64 gb read speed 95 mbs write speed 85 mbs bus interface uhs i memory type mlc file format exfat operating voltage 27 36 v series transcend ultimate suitable for 4k recording full hd recording 360 recording 3d recording sports photography device class digital camera dslr camcorder computer tablet pc mobile phone printer macbook functions ecc manufacturers warranty 30 years standard sd 301 sdhc