KJB Security DV270 Car Camera Self Recorder Easy installation. Supports up to a 16GB SD card (not included). Powered by either 4 AAA batteries or the 12V cigarette lighter adapter 640x480 resolution AVI File format Small Compact only 4 x 2 x 3/4 Uses 4 AAA (not included) Uses SD / MMC Card from 2GB to 32GB SIZE:4" x 2" x 3/4" Weighs only a few ounces