With transfer speeds of up to 275mbs the sandisk 64gb extreme pro 275mbsec microsdxc ush ii card is perfect for transferring your 4k uhd video from your action camera drone high performance camera or smartphone shockproof temperature proof waterproof and x ray proof you can take this sdxc card with you on your adventures without having to worry about its durability the included usb 30 reader makes transferring your files fast and convenient and the card comes with a rescuepro del