Usbkingdom 8GB 8 GB USB 2.0 Flash Drive Metal Credit Card Size Shape Memory Stick Thumb Drive Pendrive Jump Drive Flash Disk Pen Drive (Silver) Metal silver credit card shape,3.42*2.16*0.08 inch,real capacity,good choice for using or as gifts for friends Credit card size,fits perfectly in your purse,wallet or pocket,never lose thumb drives anywhere,easy to keep important files handy Plug and play;Read and write in high speed;Store and transfer photos, videos, songs and other files between pc computers High speed USB 2.0 interface and compatible with USB 1.1;Use A-class chip, can be erased repeatedly for 100,0000 times Operating System: Win98/ME/2000/XP/ Vista/win7 /win8, Mac OS 9.X/Linux2.4 or above