Securedigital sd sdhc card memory size 4 gb read speed 30 mbs write speed 30 mbs bus interface uhs i mode of transmission uhs104 file format fat32 operating voltage 27 36 v series sandisk extreme suitable for 360 recording sports photography full hd recording 3d recording 4k recording device class digital camera dslr camcorder computer car radio tv printer macbook labeling field functions write protection switch software included rescuep