Micro sd card micro sdxc card memory size 128 gb read speed 90 mbs write speed 60 mbs bus interface uhs i file format exfat operating voltage 2 7 3 6 v series sandisk extreme suitable for 4k recording full hd recording 3d recording 360 recording sports photography device class digital camera dslr camcorder computer tablet pc mobile phone printer macbook functions write protection switch manufacturers warranty 30 years standard sd 301 sdhc