Take your favorite photos with you wherever you go. This portable digital photo album has the capacity to hold an amazing 56 digital photos. This DPF018 portable digital photo album is small enough to be used as a key chain but large enough to view and share all your favorite photos. 3.7V lithium battery or USB 5V power supply USB 1.1 interface BMP, JPG, PHG, GIF file formats. 4 MB built-in flash memory holds up to 56 pictures Unit Dimensions. 2.25 x 2 x .75-inches (H x W x D approximate). Random assortment of colors white, red, purple,black.