My phone is constantly filled with photos, music and files for work. I've been getting really annoyed lately having to drag out the cable to hook it to my PC. I can just leave this USB drive on my keychain and move files to the drive when needed, quickly and easily freeing up space on my phone. It is also extremely easy to transfer the files from the USB drive to my external HDDs, just by plugging in the regular USB side of the drive.As you can see from the screenshot, the size is true to it's word - very close to 128GB - so lots of storage room. I love the minuscule size as well as the keychain attachment, so you don't have to worry about losing the drive somewhere! I've already used this dozens of times, without any file corruption or missing files. I'm quite please with the speed and performance of the drive too! It took about 5 minutes to transfer 1,200 photos from my phone!