Key fast write: around 27000 Kb / s, which is the first required quality on a USB stick. Its design is ingenious: classic USB, micro USB part is included in the protection and fell slightly, making it stable and easy to maneuver Micro USB position, protection is 90 °, as in the description. This is not ideal, because the rounded part and narrower is unfortunately down when all the tablets and smartphones all have a narrower bottom entry; with a case, the insertion is impossible. It is possible to extract the catch of the protection and return them, but then loses the right of withdrawal because the rotation axis is not central and all moves slightly: KINGSTON design flaw. The price is really interesting. Key recommended for use on WINDOWS PC and possibly ANDROID tablet or smartphone without protective case. test seal