A very small key is good capacity for a great price. I use it for a few months now leaving my key ring and is still in perfect condition. Its strength is nickel. If we talk transfer speed, some will say that this key has shortcomings, for my part I would say that speed is a little bit weak in writing but I did not buy that key to the transfer speed. Its modest price, small size, its capacity to 16GB and robustness gives it I find a very good price / quality ratio.