I bought this in red 4GB capacity. Wishing for more memory to save photos, I simply chose the EMTEC key in the same range. Good product, recognized by all types of devices (computer, radio). Ease of use and small size. Frankly for the price and with Amazon, it can only be recommended. I bought that same key in 4GB in my supermarket, I did not pay expensive but in comparison, it cost me more than that of 16GB on Amazon. Time VERY fast. In 2 days, between ordering, shipping and delivery. Well packaged. No complaints. Without hesitation, I chose Amazon and suppliers for all these products.