Micro sd card micro sdxc card memory size 64 gb read speed 100 mbs write speed 30 mbs bus interface uhs i file format exfat operating voltage 27 36 v series pny elite performance suitable for 4k recording 3d recording full hd recording sports photography 360 recording device class digital camera dslr camcorder computer tablet pc mp3 player mobile phone printer macbook functions write protection switch sdhc class 10 uhs speed class u3 adap