Wallet Pix™ lets you carry 58 of your favorite digital photos wherever you go! Just plug the credit-card sized album into your computer, transfer your pictures and enjoy. It’s easy to use with built-in plug and play technology, which means no special software is needed for your computer. Has auto shut-off feature and comes with 3 button batteries, USB cable, directions. Compatible with Windows 2000, ME, XP and Vista operating systems. 3-1/2" x 2".