Besides the strange look and name of the “Gravel In” it packs some pretty cool features, including 1GB/2GB of Flash memory, a 2.8-inch TFT display, an SD card slot, and 24fps video playback. Supported formats include MP4, MPEG, DivX, Xvid, WMV, MP3, WMA, WAV, JPG, BMP and GIF files.