Review on Gigastone Z90 64GB USB 3.1 Flash Drive: Waterproof, Compact & Reliable Performance by Ray Adair

First of all I am sorry that I did not read the reviews before purchasing this product. Instead, I'd buy a well-known brand (Kingston, PNY, and even SanDisk), but I was aiming for a really small form factor. Edition, New Un-Used) and REFURBISHED is written in clear bold on the flash drive itself. I bought a 64GB version, which really only has 58GB of usable memory.