Coollife Ballpoint Pen Shape Model USB2.0 Flash Stick Memory Drive Storage 4/8/16/32G GB Length: Approx. 24cm Writing Speed: 6M/S;Reading Speed: 15M/S Compatible with USB 1.1/2.0;Compatible with PC, Notebook, MAC Support Windows 7 / 8,Windows Vista,Windows 2000,Mac OS X, Linux. Can be used as a normal ballpoint pen which can write