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 27 36 v series sandisk extreme pro suitable for full hd recording 4k recording 360 recording 3d recording sports photography device class digital camera dslr camcorder computer tablet pc mp3 player mobile phone printer macbook functions write protection switch manufacturers