Micro sd card micro sdxc card memory size 64 gb read speed 95 mbs write speed 90 mbs bus interface uhs i mode of transmission uhs104 file format exfat operating voltage 2 7 3 6 v series emtec speedin suitable for 4k recording 3d recording full hd recording 360 recording sports photography device class digital camera dslr camcorder computer tablet pc mobile phone printer macbook standard sd 301 sdhc class 10 uhs speed class u3 adapter sd