Memory Storage Capacity:256GB Size:54*23*9mm USB 3.0 Write Speed:20 MB per second Read Speed:40 Megabytes Per Second Multi-Port USB Drive:The iPhone photo stick with usb3.0/iphone/micro usb/type c (independent adapter) three interfaces, which is more convenient for data transfer between different devices, so as to get rid of the data cable and iTunes and iCloud, let you switch easily storage space. What's more, you can also store your captured videos, photos or favorite movies on the photo stick and watch them directly on the 256gb flash drive. No more worrying about phone storage issues One-Click Back up:Plug and Play, you can easily back up photos, videos, and contacts on your phone by One-Click from the APP, and you can also use the USB side to store your own backups on your computer for double insurance.