UsbDiood Waterproof USB Flash Memory Drive 128GB with Key Ring (ZZ-YJa28)

I ran a USB test on this, and it came back as defective. Only 15.4gb were useful out of the 128 advertised. This is usually done when a company tries to hide the data and pass it off as a higher capacity than it actually is. I am out $18. Do not make the same mistake.

Now, when I add files from my PC, that say they transferred to this USB drive.... (safely eject). Then later go back and look, the files are not there at all. It is random, sometimes it works, sometimes it doesn't. I have never seen this before, and I know a lot about computers. You get what you pay for. At least half of my files are still present on the drive. I should have went with the SanDisk, it is a key-chain as well (I own a 32 GB), and Amazon has a 128 GB for not even that much more money, than this brand (I didn't notice the SanDisk price till later, assumed it was way more cash), oh well.... Live and learn..

After spending 12 plus hours copying my movies from my hard drive over this piece of junk, I get "this device is not supported" messages on bother my Sony Blu-ray player multimedia reader and on my Vizio TV multimedia reader... went to my laptop to check the device and it wouldn’t read it either! So, three devices wont read it and when first inserted into the USB slot on the computer, it wasn’t recognized. It took me removing it and reinserting it a couple of times before it even came up in my windows file directory... should have known better that finding a 128gb flash drive for $12.99 was too good to be true!!!

Appears to be hard-wired only for exfat file system. Loads o.k. to about 6 GB then crawls. Each of the two I tested took about 4 hours for an additional 6GB. Possible software problems. Was tested with Windows 10 and Linux Mint 18.2. When using Linux it halts frequently. It is not for Linux. A reformat on Win 10 took ten hours.

Awesome price for 128GB thumbdrive (~$18) but turned out too good to be true.Not a metal casing, as photos seem to show, but chromed plastic. But who cares about aesthetics if the product actually works? Tried copying my music collection several times, but multiple file read errors, misrepresentations of space used, files allegedly copied to the drive weren't really there... all led me to conclude this was a real lemon. Gave up on this product and returned same day.

Purchased 2 of these and when you store more then 32gb computer can not read the files. Files show on stick and shows space used but nothing works . The product is attractive and the only function it serves is to remove the USB stick throw it away and use the key ring. I don't usually do product reviews because I tend to be satisfied with the product but this product is worthless, it deserves negative stars.

While I was able to read from and write to this drive on my computer I found that my Western Digital media player wouldn’t recognize the drive and play the MP4 files I had placed on it. I thought it might be do to the exFAT format on the drive and attempted to reformat it to NTFS but that failed. I contacted the seller regarding this matter and they were very good about refunding my purchase and told me there was no need to return the item.

Files would simply disappear after being copied over - folders looked like they copied ok - only to find all folders were EMPTY when opened - even though properties showed space used