Photomate 15 inch Hi-Resolution Digital Picture Frame with Motion Sensor & 4GB Built-in Memory Go green with the built-in motion sensor. Automatically turns on when it senses you nearby 4GB Built-In Storage with expandable storage via USB flash drive or SD/SDHC/MMC/MS cards 15 inch super high-resolution screen with 4:3 aspect ratio. Perfect for displaying all your images and videos More than just a picture frame - Plays AVI Video, MP3 Audio as well as Calendar and Alarm Functions Conveniently display hundreds of images with the built-in Slideshow feature