Micro sd card micro sdxc card memory size 64 gb read speed 48 mbs bus interface uhs i file format exfat operating voltage 27 36 v series sandisk ultra device class tv digital camera dslr camcorder car radio computer tablet pc mobile phone functions write protection switch manufacturers warranty 10 years standard sd 301 sdhc class 10 protective properties waterproof shockproof magnet proof temperature resistant dimensions 15 mm x 11 mm x 1