Aisster(TM) 2-32GB USB 2.0 Flash Drive Memory Stick Wristband Bracelet Thumb U Disk Gift Shock resistance, damp proof Compatible with USB 1.1/2.0 Compatible with PC, Notebook, MAC USB 2.0 compatible Plug & play with Windows 2000/Vista/Window 7, Mac 9.0 or above Please kindly select the capacity and the color according to your needs before purchased,thanks