Securedigital sd sdhc card memory size 8 gb read speed 94 mbs bus interface uhs i file format fat32 operating voltage 27 36 v series sony expert device class car radio macbook tv dslr digital camera camcorder computer printer labeling field functions write protection switch manufacturers warranty 5 years standard sd 301 sdhc class 10 uhs speed class u1 protective properties waterproof x ray resistant temperature resistant shockproof