This pen drive is a plain simple style of a stylus. one side is the black ball structure which can be used as a stylus, while on the other side is the male connector. The middle flat body of the pen drive is a good area to print your own custom logos and designs. it comes in many sizes from the 1gb to 32gb. It is compatible with Windows OS and the Mac OS. It fits easily in the pockets and good to carry every where. The USB interface of this pen drive is 2.0.