Micro sd card micro sdxc card memory size 64 gb read speed 90 mbs write speed 45 mbs bus interface uhs i file formats fat32 exfat operating voltage 27 36 v suitable for full hd recording 4k recording 360 recording 3d recording sports photography device class digital camera dslr camcorder computer tablet pc mobile phone car radio tv printer macbook functions write protection switch sdhc class 10 uhs speed class u1 adapter sd card adapter