Micro sd card micro sdhc card memory size 32 gb read speed 60 mbs write speed 40 mbs bus interface uhs i file format fat32 operating voltage 27 36 v series sandisk extreme 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 software included rescuepro standard sd 301